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Dopamine System, Craving & Pursuit Explained | Dr. Andrew Huberman

Video vocabulary

nucleus

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US / ˈnju:kliəs /

UK / ˈnu:kliəs /

B2
  • noun
  • Center of an atom
  • Control center of a cell
  • Most important part of something larger

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

possibility

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US / ˌpɒsə'bɪlətɪ /

UK / ˌpɑsəˈbɪlɪti /

A2
  • noun
  • Something with a chance of happening or being true

anything

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US / ˈeniθɪŋ /

UK / ˈɛniˌθɪŋ /

A1
  • pronoun
  • A thing of any kind

swiss

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US / swɪs /

UK / swɪs /

A1
  • noun
  • Person from Switzerland
  • other
  • People or things from Switzerland

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

early

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US / ˈɜ:li /

UK / ˈɜ:rli /

A1
  • adjecitve
  • Happening or appearing before
  • adverb
  • Coming/happening before others in a time sequence
  • Happening sooner than expected

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

visual

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US / 'vɪʒʊəl /

UK / ˈvɪʒuəl /

A2
  • adjecitve
  • Of or relating to vision
  • noun
  • Pictures/images used to help audience understand

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

trigger

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US / 'trɪɡə(r) /

UK / ˈtrɪɡɚ /

B1
  • noun
  • Lever on a gun that you pull to fire
  • Device that starts a process
  • verb
  • To start a process off e.g. a memory

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

perhaps

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US / pəˈhæps /

UK / pɚˈhæps /

A1
  • adverb
  • Possibly, but not certainly; maybe

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

wave

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US / weɪv /

UK / wev /

A2
  • noun
  • Movement of sound, air or energy
  • Deep and strong emotion that is suddenly felt
  • Slightly curved shape in hair
  • Frequency of movement of objects together
  • Up and down movement of water in a lake or sea
  • Signal with your hand to say hello or goodbye
  • verb
  • To cause to move side to side or back and forth
  • To swing back and forth as a result of the wind
  • To move your hand or arm to say hello or goodbye

release

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US / rɪ'li:s /

UK / rɪ'li:s /

A2
  • noun
  • Act of freeing someone from a duty or burden
  • Introduction of a new product, film, book, etc.
  • Relief from sadness, suffering or trouble
  • Act of freeing from a jail, cage, prison, etc.
  • verb
  • To free someone from a responsibility or burden
  • To allow a film, music etc. to be sold/distributed
  • To allow to leave a jail, cage, etc.; let out
  • To let go of something you are holding

environment

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US / ɪn'vaɪrənmənt /

UK / ɛnˈvaɪrənmənt, -ˈvaɪən- /

A1
  • noun
  • Natural world in which plants and animals live
  • The entire surrounding conditions of something

minus

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US / ˈmaɪnəs /

UK / ˈmaɪnəs /

A2
  • adjecitve
  • Being close to the bottom of a letter grade
  • noun
  • Negative quality; disadvantage
  • Sign that indicates subtraction
  • preposition
  • Being less than zero in number
  • Used when subtracting one number from another
  • verb
  • To take one number away from another; subtract

another

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US / əˈnʌðə(r) /

UK / əˈnʌðɚ /

A1
  • adjecitve
  • One more, but not this
  • determiner
  • One more added
  • pronoun
  • One more (thing)

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

insert

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US / ɪnˈsɜ:t /

UK / ɪnˈsɜ:rt /

B1
  • noun
  • Act of putting into a certain place or spot
  • verb
  • To put something into a certain place or spot

concept

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US / 'kɒnsept /

UK / ˈkɑnˌsɛpt /

A2
  • noun
  • Abstract idea of something or how it works

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

completely

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US / kəmˈpli:tli /

UK / kəmˈpliːtli /

A1
  • adverb
  • In every way or as much as possible

after

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US / 'ɑ:ftə(r) /

UK / ˈæftɚ /

A1
  • adverb
  • Later than another time, or behind something
  • conjunction
  • Following something before
  • preposition
  • When an event happened or time has passed

taste

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US / teɪst /

UK / test /

A2
  • noun
  • (Good) sense of style in clothes, art, or manners
  • Flavor in your mouth from food or drink
  • A liking for something; preference
  • Brief experience of something
  • verb
  • To experience something
  • To experience the flavor of food, drink
  • To briefly experience to see if you like something

roast

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US / rəʊst /

UK / roʊst /

B1
  • noun
  • A joint of meat cooked in an oven
  • Joints of meat cooked in an oven
  • verb
  • To strongly criticize often in a teasing manner
  • To cook food in an oven or over a fire

tomato

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US / təˈmɑ:təu /

UK / təˈmeto /

A2
  • noun
  • Round soft red vegetable, fruit used in sauces

indeed

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US / ɪnˈdi:d /

UK / ɪnˈdid /

A2
  • adverb
  • Actually; in fact; in reality

stimulus

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US / ˈstɪmjələs /

UK / ˈstɪmjələs /

B2
  • noun
  • Something that causes a change

separate

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US / 'sepəreɪt /

UK / 'sepəreɪt /

A2
  • adjecitve
  • Being different from or unrelated to another
  • verb
  • To divide two things by being in between them
  • To live away from your husband or wife
  • To move things away from each other

complicate

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US / ˈkɒmplɪkeɪt /

UK / ˈkɑ:mplɪkeɪt /

B1
  • verb
  • To make more difficult to do, understand or use

feel

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US / fi:l /

UK / fil /

A1
  • verb
  • To be aware of or experience an emotion, sensation
  • To sense through direct contact; touch

relieve

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US / rɪ'li:v /

UK / rɪˈliv /

B1
  • verb
  • To make less boring by making some change
  • To replace workers with others
  • To make a problem less difficult or serious
  • To reduce pain, stress or an unpleasant feeling

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

peak

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US / pi:k /

UK / pik /

B1
  • noun
  • Part of a cap that sticks out over your eyes
  • The very top of a mountain
  • State when something is at its best
  • Time or point when the highest level occurs
  • verb
  • To reach the highest or best point

certain

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US / ˈsə:tn /

UK / ˈsɚtn /

A1
  • adjecitve
  • Definite, fixed
  • Referring to an unspecified amount or quantity
  • Being sure about something; without doubt

eat

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US / i:t /

UK / it /

A1
  • verb
  • To put food in your mouth

crucially

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US / ˈkru:ʃɪəlɪ /

UK / ˈkruʃəlɪ /

B1
  • verb
  • To an extremely important or necessary degree

walk

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US / wɔ:k /

UK / wɔk /

A1
  • noun
  • Journey on foot done for pleasure or exercise
  • verb
  • To move with your legs at a slowish pace

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

reward

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US / rɪ'wɔ:d /

UK / rɪˈwɔrd /

A2
  • noun
  • Money given for information about criminals
  • verb
  • To give something because of someone's good work
  • To give someone money for helping the police
  • To give someone satisfaction for what they did

motivation

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US / ˌməʊtɪ'veɪʃn /

UK / ˌmotəˈveʃən /

B1
  • noun
  • Reason behind why someone did something

realize

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US / 'ri:əlaɪz /

UK / ˈriəˌlaɪz /

A1
  • verb
  • To become aware of or understand mentally

relate

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US / rɪ'leɪt /

UK / rɪˈlet /

A2
  • verb
  • To demonstrate a logical relationship between
  • To understand or sympathize with, e.g. a problem
  • To tell a story, or tell about a particular event

describe

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US / dɪ'skraɪb /

UK / dɪˈskraɪb /

A1
  • verb
  • To tell the appearance, sound, smell of something

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

prediction

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US / prɪˈdɪkʃn /

UK / prɪˈdɪkʃən /

A2
  • noun
  • A statement of what will happen next

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

life

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US / laɪf /

UK / laɪf /

A1
  • noun
  • All the living things e.g. animals, plants, humans
  • Period of time things live, from birth to death

deplete

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US / dɪˈpli:t /

UK / dɪˈplit /

B2
  • verb
  • To reduce the amount, strength or number of

experience

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US / ɪk'spɪərɪəns /

UK / ɪkˈspɪriəns /

A1
  • noun
  • Thing a person has done or that happened to them
  • An event at which you learned something
  • Knowledge gained by living life, doing new things
  • verb
  • To gain knowledge by doing things

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

involve

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US / ɪn'vɒlv /

UK / ɪnˈvɑlv /

A2
  • verb
  • To have or be included as a part of something

understand

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US / ˌʌndə'stænd /

UK / ˌʌndɚˈstænd /

A1
  • verb
  • To know the meaning of language, what someone says

food

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US / fu:d /

UK / fud /

A1
  • noun
  • What people and animals eat to live
  • Things taken in by plants to maintain life
  • A particular style or type of cooking, e.g. Asian

pickle

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US / ˈpɪkl /

UK / ˈpɪkəl /

B2
  • noun
  • A cucumber preserved in brine or vinegar

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

signal

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US / 'sɪɡnəl /

UK / ˈsɪɡnəl /

A2
  • adjecitve
  • Most important or most noticeable
  • noun
  • Movement of a hand or other means to send messages
  • Act/sound that tells people to do/start something
  • Road-side lights that direct traffic to go or stop
  • Sound and light waves carrying TV and radio data
  • verb
  • To be evidence/an indication something will happen
  • To make a noise or motion to tell someone to start

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

desire

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US / dɪ'zaɪə(r) /

UK / dɪˈzaɪr /

A2
  • noun
  • Thing that is wished for or wanted
  • verb
  • To wish for, hope or want something

surprise

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US / səˈpraɪz /

UK / sərˈpraɪz /

A1
  • adjecitve
  • That surprises you; not expected
  • noun
  • Something unexpected that slightly shocks you
  • verb
  • To do something that another person didn't expect

compare

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US / kəm'peə(r) /

UK / kəmˈpɛr /

A1
  • verb
  • To consider how similar and different things are

deli

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US / ˈdeli /

UK / ˈdɛli /

C1
  • noun
  • A shop selling unusual or special food products

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

deliver

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US / dɪ'lɪvə(r) /

UK / dɪˈlɪvɚ /

A2
  • verb
  • To give birth to a child; help a woman give birth
  • To save someone from a problem or crisis
  • To keep a promise; do what you say you would
  • To present something to a group, as a speech
  • To take something to a person or place

give

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US / ɡɪv /

UK / ɡɪv /

A1
  • noun
  • Degree of flexibility in something, a material
  • verb
  • To hand over or present something to someone
  • To cause someone to have or experience something

anticipation

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US / ænˌtɪsɪˈpeɪʃn /

UK / ænˌtɪsəˈpeʃən /

B1
  • noun
  • Pleasurable feeling about a future event

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

expect

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US / ɪk'spekt /

UK / ɪkˈspɛkt /

A1
  • verb
  • To believe something is probably going to happen

baseline

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US / ˈbeɪslaɪn /

UK / ˈbeɪslaɪn /

C1
  • noun
  • Imaginary standard by which things are compared

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

whether

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US / ˈweðə(r) /

UK / ˈhwɛðɚ, ˈwɛð- /

A1
  • conjunction
  • If something will happen or not

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

simple

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US / 'sɪmpl /

UK / ˈsɪmpəl /

A1
  • adjecitve
  • Not hard to understand or do; not complex
  • Having only a few parts; not complex
  • Being ordinary or normal
  • Being plain; without a lot added for style

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

sandwich

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US / ˈsænwɪtʃ /

UK / ˈsændwɪtʃ, ˈsæn- /

A1
  • noun
  • Two pieces of bread with meat, cheese etc. in it
  • verb
  • To catch between two things

trivial

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US / 'trɪvɪəl /

UK / ˈtrɪviəl /

B2
  • adjecitve
  • Small; unimportant; worthless

bring

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US / brɪŋ /

UK / brɪŋ /

A1
  • verb
  • To take or go with someone to a place

applicable

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US / əˈplɪkəbl /

UK / ˈæplɪkəbəl, əˈplɪkə- /

B1
  • adjecitve
  • Being appropriate to or suitable for something

error

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US / ˈerə(r) /

UK / ˈɛrɚ /

A2
  • noun
  • Something that is not correct; a mistake

drop

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US / drɒp /

UK / drɑp /

A1
  • noun
  • Distance between a higher and a lower level
  • Act of letting something fall (from your hand)
  • A decrease in quantity or quality; reduction
  • Tiny amount of liquid, with rounded bottom
  • verb
  • To drive someone to a place and then drive away
  • To let something fall from your hand
  • To fall or lie down quickly, as when shot
  • To decide to stop something e.g. a course)
  • To (cause to) reduce in quantity or quality

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

initial

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US / ɪ'nɪʃl /

UK / ɪˈnɪʃəl /

A2
  • adjecitve
  • Existing or occurring at the beginning
  • noun
  • First letter of your given name
  • verb
  • To authorize something by writing your initials

cup

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US / kʌp /

UK / kʌp /

A1
  • noun
  • Small round container used for drinking
  • Silver trophy teams compete to win
  • Unit of measurement for foods or liquids
  • verb
  • To make the shape of a bowl with your hands

pursue

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US / pə'sju: /

UK / pɚˈsu /

B1
  • verb
  • To follow and try to catch, or to reach a goal
  • To try to achieve or get something over time

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

very

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US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

chance

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US / tʃɑ:ns /

UK / tʃæns /

A1
  • adjecitve
  • Happening by luck; not planned
  • Taking a risk to try something
  • noun
  • The way something happens without planning
  • An opportunity; favorable circumstances, situation
  • The possibility that something will happen
  • verb
  • To occur just through luck; happen
  • To take a risk to try something

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

design

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US / dɪˈzaɪn /

UK / dɪˈzaɪn /

A1
  • noun
  • The way something is planned, to fulfill a purpose
  • verb
  • To plan in a particular way to fulfill a purpose
  • To think of a plan

direction

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US / də'rekʃn /

UK / dɪˈrɛkʃən, daɪ- /

A2
  • noun
  • When someone tells people what to do
  • Describes the way you are going, e.g. North

general

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US / 'dʒenrəl /

UK / ˈdʒɛnərəl /

A1
  • adjecitve
  • Widespread, normal or usual
  • noun
  • Top ranked officer in the army

nap

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US / næp /

UK / næp /

B2
  • noun
  • Brief period of sleep or rest during the day
  • verb
  • To sleep or rest for a short time during the day

movement

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US / ˈmu:vmənt /

UK / ˈmuvmənt /

A2
  • noun
  • Part of a piece of classical music
  • Group with a shared interest or goal
  • Group sharing the same idea to change society, art
  • Action you do when exercising, e.g. in a gym
  • Part of a piece of music

nice

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US / naɪs /

UK / naɪs /

A1
  • adjecitve
  • Being attractive or of high quality or value
  • Good or enjoyable
  • Being kind or friendly

feature

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US / 'fi:tʃə(r) /

UK / ˈfitʃɚ /

A2
  • adjecitve
  • Main; important
  • noun
  • Special report in a magazine or paper
  • Distinctive or important point of something
  • verb
  • To highlight or give special importance to

mountain

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US / 'maʊntən /

UK / ˈmaʊntən /

A1
  • noun
  • Very high piece of land, higher than a hill

cause

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US / kɔ:z /

UK / kɔz /

A2
  • noun
  • Belief, goal or organization that people support
  • Reason for
  • verb
  • To make something happen; create effect or result

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

case

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US / keɪs /

UK / kes /

A1
  • noun
  • Container used to carry things, e.g. clothes
  • Set of facts about a crime
  • Set of facts about an event
  • Example or instance of something
  • verb
  • To find out about a place, as in planning to steal

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

cue

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US / kju: /

UK / kju /

B2
  • noun
  • Word or action in a play to tell an actor to speak
  • Signal telling when you have to do something
  • verb
  • To give a signal telling someone when to act/speak

value

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US / 'vælju: /

UK / ˈvælju /

A1
  • noun
  • Importance you attach to something
  • Some information expressed as a number
  • Stated price of something; worth
  • verb
  • To place a high importance on something
  • To say how much money something is worth

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

include

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US / ɪnˈklu:d /

UK / ɪnˈklud /

A1
  • verb
  • To make someone, something part of a group

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

prefrontal

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US / pri:'frʌntəl /

UK / pri:'frʌntəl /

A1
  • other
  • Anterior to a frontal structure

cortex

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US / 'kɔ:teks /

UK / ˈkɔrˌteks /

C1
  • noun
  • The outer part of an organ/structure, e.g. brain

beef

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US / bi:f /

UK / bif /

A2
  • noun
  • Red meat from cows

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

glass

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US / ɡlɑ:s /

UK / ɡlæs /

A1
  • adjecitve
  • Being made of glass
  • noun
  • Clear hard container used for drinking
  • A lens for eyewear
  • Hard see-through material used for making windows

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

example

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US / ɪgˈzɑ:mpl /

UK / ɪɡˈzæmpəl /

A1
  • noun
  • Thing, person which represents a category

bottom

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US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

great

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US / ɡreɪt /

UK / ɡret /

A1
  • adjecitve
  • Very large in size
  • Very important
  • Very good; fantastic; wonderful
  • adverb
  • Very good; better than before
  • noun
  • Successful and well-admired person

action

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US / 'ækʃn /

UK / ˈækʃən /

A2
  • noun
  • Something that a person or thing does
  • verb
  • To act to do something

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

precede

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US / prɪ'si:d /

UK / prɪˈsid /

B1
  • verb
  • To happen or come before something
  • To go somewhere before a person/thing

coffee

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US / ˈkɒfi /

UK / ˈkɔ:fi /

A1
  • adjecitve
  • A brown chocolate color
  • noun
  • A brown drink made from roasted beans and water

consume

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US / kən'sju:m /

UK / kənˈsum /

A2
  • verb
  • To eat, drink, buy or use up something
  • To take all your energy; focus the attention

trough

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US / trɒf /

UK / trɔ:f /

B2
  • noun
  • Long open container for feeding farm animals
  • Low part between the tops of hills or waves

set

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US / set /

UK / sɛt /

A1
  • adjecitve
  • Prepared for something; ready
  • noun
  • Complete group of something
  • Place where a television show or movie is filmed
  • Group of games in a tennis match
  • Device that receives radio or television signals
  • verb
  • To make a clock state or ring at a particular time
  • To decide upon or choose something
  • To make something ready for use (e.g. table)
  • To decide on a price for something
  • To become hard (of glue, concrete etc.)
  • To be located in a specific place or time
  • To put (e.g. a vase) down carefully in a place
  • To put someone in a certain condition or state
  • (Of the sun) to go lower than the horizon

soon

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US / su:n /

UK / sun /

A1
  • adverb
  • At a time not long from now

system

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US / 'sɪstəm /

UK / ˈsɪstəm /

A1
  • adjecitve
  • Working in an organized, logical way
  • noun
  • Set of organized, planned ideas that work together

standard

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US / 'stændəd /

UK / ˈstændəd /

A2
  • adjecitve
  • Being the accepted normal level of quality
  • (Of a language) being the most accepted in a place
  • noun
  • Official unit of measuring something
  • Principle of behaving in a moral way

dependent

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US / dɪˈpendənt /

UK / dɪˈpɛndənt /

A2
  • adjecitve
  • Someone who relies on (financial) support

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

beautifully

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US / ˈbju:tɪfli /

UK / ˈbjutəfəlɪ /

A1
  • adverb
  • Having dome something well
  • In a beautiful manner; well; perfectly

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

street

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US / stri:t /

UK / strit /

A1
  • noun
  • Road in a city with buildings and places to walk

coincidence

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US / kəʊˈɪnsɪdəns /

UK / koʊˈɪnsɪdəns /

B1
  • noun
  • Occurrence by chance, not design or planned
  • State in which two ideas or opinions are the same

pursuit

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US / pəˈsju:t /

UK / pɚˈsut /

B1
  • noun
  • Act of following someone to catch them
  • Process of attempting to achieve a goal
  • Activity, hobby or sport, done for enjoyment

amazing

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US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

happenstance

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US / ˈhæpənstæns /

UK / ˈhæpənˌstæns /

C2
  • noun
  • Chance or a chance event

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

sourdough

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US / ˈsaʊədəʊ /

UK / ˈsaʊərdoʊ /

A1
  • noun
  • Sour fermented dough used to make a bread

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

fine

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US / faɪn /

UK / faɪn /

A2
  • adjecitve
  • Good, acceptable or satisfactory
  • Of high quality; made with great skill
  • In a careful or exact manner; into small pieces
  • Being of high quality
  • Good; okay; no problem
  • (Of weather) good; not raining
  • noun
  • Money you have to pay because you broke a rule
  • verb
  • To pay money because you broke a law

order

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US / 'ɔ:də(r) /

UK / ˈɔrdɚ /

A1
  • noun
  • Religious or social group, as of nuns
  • Instructions to others to do what you want
  • State in which things are neat and organized
  • What you ask to buy, e.g. food in restaurant
  • Social or political control of an area
  • verb
  • To put things in a sequence, e.g. a, b, c
  • To give instructions to others to do what you want
  • To ask for something you want to buy, e.g. a meal

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

below

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US / bɪ'ləʊ /

UK / bɪˈlo /

A1
  • preposition
  • In a lower position, place, or level

hungry

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US / ˈhʌŋgri /

UK / ˈhʌŋɡri /

B2
  • adjecitve
  • Feeling a need or want to eat food
  • Being eager to get or do something

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

motivate

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US / 'məʊtɪveɪt /

UK / ˈmotəˌvet /

A2
  • verb
  • To give someone a reason, the will to do something

entire

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US / ɪn'taɪə(r) /

UK / ɛnˈtaɪr /

A2
  • adjecitve
  • Complete or full; with no part left out; whole

level

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US / 'levl /

UK / ˈlɛvəl /

A2
  • adjecitve
  • (Sports) equal to another
  • Being steady and determined (e.g. a voice)
  • noun
  • Specific height of something
  • Amount of ability you have compared to others
  • Floor or deck within a building
  • Tool used to determine if something is lying flat
  • verb
  • To aim a gun at someone
  • To destroy a building; flatten an area completely
  • To make things flat or even
  • To make a score equal to another, in sports

bad

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US / bæd /

UK / bæd /

A1
  • adjecitve
  • Not good; wrong
  • Lacking in good morals; evil
  • No longer fresh; spoiled

predict

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US / prɪ'dɪkt /

UK / prɪˈdɪkt /

A2
  • verb
  • To guess or estimate what will or might happen

cetera

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US / ˈsetərə /

UK / ˈsetərə /

A1
  • other

less

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US / les /

UK / lɛs /

A1
  • adjecitve
  • Smaller in amount or degree
  • adverb
  • To a smaller degree
  • noun
  • A smaller amount
  • preposition
  • With the subtraction of

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

perfect

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US / 'pɜ:fɪkt /

UK / ˈpɚfɪkt /

A1
  • adjecitve
  • So good it cannot be improved
  • verb
  • To do something so well, it cannot be done better

goal

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US / ɡəʊl /

UK / ɡol /

A2
  • noun
  • Something you try to do or achieve; an aim
  • (Sports) net into which you put a ball to score
  • (Sports) act of scoring by putting a ball in a net

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

open

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US / 'əʊpən /

UK / ˈopən /

A1
  • adjecitve
  • Available for use; accessible
  • Not being hidden; available for others to see
  • Being available for customers to enter or use
  • Allowing everyone to use or take part in
  • Not secret anymore
  • Not closed or shut
  • Willing to accept new ideas and thoughts
  • noun
  • Name for a tennis or golf competition
  • verb
  • To make accessible or able to be used, e.g. road
  • To start the activities or services of a business
  • To make a space or hole appear in something
  • To move or change so that it is no longer closed
  • To start something, e.g. a new business

circuit

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US / ˈsɜ:kɪt /

UK / ˈsɜ:rkɪt /

B1
  • noun
  • An area where cars race in a circle
  • Route for journey all the way around a place
  • Series of events moving from place to place
  • other
  • Electronic equipment consisting of switches
  • verb
  • To complete a journey all the way round an area

crave

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US / kreɪv /

UK / krev /

B2
  • verb
  • To have a very strong desire for something

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

thirsty

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US / 'θɜ:stɪ /

UK / ˈθɚsti /

B1
  • adjecitve
  • Having a powerful desire or need for something
  • Needing to drink something

person

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US / 'pɜ:sn /

UK / 'pɜ:rsn /

A1
  • noun
  • Man, woman or child

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

therefore

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US / ˈðeəfɔ:(r) /

UK / ˈðerfɔ:(r) /

A1
  • adverb
  • And so; for that reason

inherent

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US / ɪnˈhɪərənt /

UK / ɪnˈhɪrənt /

B1
  • adjecitve
  • Existing as an essential part of

love

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US / lʌv /

UK / lʌv /

A1
  • noun
  • Person's name
  • A very strong feeling of affection
  • The person you care very deeply about
  • Strong, deep emotional and sexual attraction
  • verb
  • To care for and like someone very strongly, deeply
  • To like doing very much; enjoy greatly
  • To feel a strong emotional and romantic attraction

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

phone

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US / fəʊn /

UK / foʊn /

A2
  • noun
  • Machine used to talk to someone who is far away
  • verb
  • To talk to someone using a telephone

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

blank

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US / blæŋk /

UK / blæŋk /

A2
  • verb
  • To make empty
  • To cause a memory to be erased
  • adjecitve
  • Showing no emotion or understanding
  • Being empty; not filled out; with no writing on it
  • noun
  • Empty space on a form which you fill in

pure

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US / pjʊə(r) /

UK / pjʊr /

A2
  • adjecitve
  • Not mixed with anything else
  • Being morally good

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

remember

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US / rɪ'membə(r) /

UK / rɪˈmɛmbɚ /

A1
  • verb
  • To give someone a gift, e.g. birthday, wedding
  • To hold a thought in your mind to not forget it
  • To bring a previous image or idea to your mind

increase

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US / ɪn'kri:s /

UK / ɪnˈkris /

A1
  • noun
  • Fact of increasing; amount something grows by
  • verb
  • To make or become larger in size or amount

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

fundamental

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US / ˌfʌndəˈmentl /

UK / ˌfʌndəˈmɛntl /

A2
  • adjecitve
  • Forming a necessary part, base, or core
  • noun
  • A basic part of something
  • (Music) the lowest note in a harmony

everyday

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US / ˈevrideɪ /

UK / ˈɛvriˈde /

A1
  • adjecitve
  • Used or seen daily; for daily use; ordinary

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

prior

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US / 'praɪə(r) /

UK / ˈpraɪɚ /

B1
  • adjecitve
  • Existing or coming earlier in time
  • (Of a claim, etc.) more important than another one
  • noun
  • Monk or priest in charge of a monastery

mind

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US / maɪnd /

UK / maɪnd /

A1
  • noun
  • One's opinion or way of thinking about something
  • Part of humans that allows us to think or feel
  • verb
  • To be bothered or upset by something
  • To take care of someone e.g. as a bodyguard

instance

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US / 'ɪnstəns /

UK / ˈɪnstəns /

A2
  • noun
  • An example of something; case
  • verb
  • To give as an example of something else

mini

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US / 'mɪnɪ /

UK / ˈmɪni /

B1
  • noun
  • Small British car
  • A very short skirt
  • prefix
  • Small

dictate

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US / dɪk'teɪt /

UK / ˈdɪkˌtet /

B1
  • verb
  • To speak while someone writes down your words
  • To make a thing necessary
  • To order that something should happen

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

propensity

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US / prəˈpensəti /

UK / prəˈpɛnsɪti /

B2
  • noun
  • Natural tendency to behave in a particular way

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

quickly

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US / ˈkwɪkli /

UK / ˈkwɪklɪ /

A1
  • adverb
  • Without taking a lot of time; fast

substance

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US / 'sʌbstəns /

UK / ˈsʌbstəns /

A2
  • noun
  • Essence of; most basic or central qualities
  • Particular type of material
  • Having material form; existing
  • Quality of truth, importance, or meaningfulness

before

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US / bɪˈfɔ:(r) /

UK / bɪˈfɔr,-ˈfor /

A1
  • adverb
  • At a time earlier than the present; previously
  • conjunction
  • In advance of something happening
  • preposition
  • In front of someone or something

conscious

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US / ˈkɒnʃəs /

UK / ˈkɑnʃəs /

A2
  • adjecitve
  • Aware of what is going on around you

fall

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US / fɔ:l /

UK / fɔl /

A1
  • noun
  • Season after summer and before winter; Autumn
  • A drop in amount; decrease
  • Dropping from a standing position to the ground
  • verb
  • To drop in amount; to decrease
  • To come down from a higher position suddenly
  • To go from standing to the ground, by accident

dopamine

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US / 'dəʊpəmi:n /

UK / 'doʊpəmi:n /

A1
  • noun
  • Drug used to treat shock and hypotension
  • Subtitles section
  • So let's think about dopamine peaks and baselines.
  • And let's remember that for every peak, there's a trough.
  • What do I mean by that?
  • Well, when you have a wave, you also have the bottom of the wave.
  • When you have a mountain, you have the bottom of the mountain.
  • When we think about dopamine peaks and dopamine baselines, we have to include that trough because that trough, that is the level of dopamine below baseline, really dictates whether or not you are going to feel motivated to pursue something or not.
  • So I'm going to give you a visual in your mind, a visual in your mind.
  • is an increase in dopamine that's triggered by your desire for something.
  • And really it could be your desire for anything.
  • If you're hungry and you're thinking about, I really want a sandwich.
  • I really want a, let's think, what sandwich would I want right now?
  • A really nice roast beef sandwich on sourdough with a slice of Swiss, tomatoes, slice of pickle.
  • Here I'm describing the sandwich that I would want.
  • So if you're hungry and you're thinking about that, dopamine starts rising.
  • This is crucially important to understand.
  • Dopamine is not just released when we get the reward, when we get the thing that we're pursuing.
  • Dopamine is released in anticipation of what we want.
  • That increase in dopamine is by no happenstance, no mistake,
  • relates also to our propensity and desire to move.
  • Remember earlier I told you there's a separate circuit of dopamine that triggers movement and that when it's depleted is causing things like deficits in movement related to Parkinson's or other movement disorders.
  • Well, that's not pure coincidence.
  • That's because desire and the need to move in order to pursue and reach goals are one in the same process.
  • So if I desire a sandwich, or I desire a cup of coffee, or I desire some water when I'm thirsty, there's an increase in dopamine that we could call a little mini peak in dopamine.
  • But then here's the key thing.
  • Very soon after I realized my desire for something, that peak that was caused by the desire comes down and drops below baseline, below the level of dopamine that it was prior to even thinking about the sandwich or the coffee or the glass of water.
  • And it's that drop below baseline that triggers my desire to go out and find that sandwich, that coffee, that water, or that blank, insert whatever it is that you happen to desire, action or substance of any kind or person, et cetera.
  • So that drop below baseline is fundamental to the whole process.
  • And that drop below baseline was triggered by the preceding peak.
  • So let's say that I desire a sandwich.
  • There's an increase in dopamine.
  • Then very quickly, it comes down below baseline just a little bit.
  • Now I'm in pursuit of the sandwich.
  • I'm looking for where I can get that sandwich.
  • I can order it perhaps to be delivered.
  • I can go out and find it.
  • Now is the stage in which I have to think about what are the different stimuli, that is the things in my environment that signal whether or not I'm likely to get that sandwich or not.
  • And so for instance, if I were to go into my phone and order food on a nap or walk down the street and
  • see the sign for a deli, that's a cue that I'm likely to relieve that drop in dopamine and get not just back to baseline, but then I'll get a peak in dopamine.
  • And indeed, that's what happens.
  • If I find that deli, I go into the deli, they're open, they're making the sandwich that I want, they make my sandwich and great.
  • I get that sandwich and that sandwich will have some degree of inherent reward to it.
  • Some degree of my liking it or not liking it.
  • So let's say I like it.
  • It's not the best sandwich I've ever had, but all I'm doing is comparing my desire for that sandwich to the sandwich that I actually got and ate.
  • And chances are it's going to relieve that craving, meaning it will take that dopamine that had fallen below baseline, up, up, back to baseline.
  • And if I like the sandwich, it's going to indeed increase that dopamine again to another peak.
  • Now, if I love the sandwich, like it's the most delicious thing that I've ever tasted in my entire life, well, then I'll get a big peak in dopamine when I consume that reward.
  • However, chances are the sandwich is more or less as I expect it to be, which is pretty good.
  • I'll eat it and I'm fine.
  • What do I mean by fine?
  • Well, there's a concept called reward prediction error.
  • Reward prediction error says that the dopamine that it has experienced, that is, that's released from the VTA and nucleus accumbens,
  • is going to be of a certain value.
  • And that value is going to be compared to the desire and expectation of what I thought I was going to get.
  • So if you take what you actually got minus what you expected, that's reward prediction error.
  • So if the sandwich is basically what I expected to get, fine.
  • Dopamine comes down basically to a baseline level that's pretty standard for me and is basically the baseline level I had before I ever thought about the sandwich at all.
  • If the sandwich completely surprises me and is completely amazing, just an amazing sandwich, well then, the level of dopamine that I experience when I consume that sandwich is going to be even greater and it's going to be that minus what I expected.
  • So there, it's a bigger reward prediction error in the direction of higher peak by consuming the sandwich.
  • And then of course, there's the other possibility, which is the deli's closed,
  • or the sandwich they make me is lousy, or it doesn't taste good, or something happened in the consuming of that sandwich that just makes it a bad experience.
  • In which case, if we take that reward experienced minus reward predicted from the initial craving, well then it's going to be less than what I expected, and therefore the baseline drops below
  • where it was prior to even desiring the sandwich.
  • Okay, so all of this might seem a little bit complicated, but it's all very simple.
  • Desire for things increases dopamine, but then our level of dopamine drops below baseline, and it's that drop below baseline that triggers the motivation to bring that dopamine level back up by going and pursuing the thing that you wanted in the first place.
  • Now,
  • Of course, as this is happening, you're not conscious of your dopamine levels.
  • You experience this as context dependent craving and pursuit.
  • Because remember, the prefrontal cortex is involved in context setting and craving and pursuit because it relates to action and movement, which is.
  • one of the general features of the dopamine system.
  • So you can start to see how this is a beautifully designed system.
  • And you can also see how it's a perfect system for desire and pursuit of anything, not just sandwiches, as I'm giving you in this somewhat trivial, but everyday and therefore applicable example.