Vocabulary

  • pass through: To experience something, often unpleasant or difficult.
  • act on: To have an effect on something.
  • tighten up: To make stricter or more secure.
  • just kind of: Used to express a feeling or state in a vague or hesitant way.
  • back into: To drive a vehicle backwards into a space or area.
  • at night: During the night; in the nighttime.
  • kill me: An exaggerated expression of frustration or annoyance.
  • have to: Must do
  • got to: To arrive at some place
  • to death: Extremely; to a great degree
  • go forth: To begin or proceed with something, especially after hesitation or delay.
  • at home: In one's own residence or country.
  • coffee: A brown drink made from roasted beans and water
  • cup: Small round container used for drinking
  • slow: Lacking activity, busyness or excitement
  • body: The physical structure of a person or animal.
  • drink: To put water in your body through your mouth
  • feel: To be aware of or experience an emotion, sensation
  • morning: Early part of the day before 12 p.m
  • leave: To go away from; depart
  • present: Being in attendance; being there; having turned up
  • drinker: Someone who drinks; someone who likes alcohol
  • small: Little in size; not big
  • sugar: Substance which the body stores or uses for energy
  • home: House, apartment or building to be rented or sold
  • cat: Household pet with fur, four legs and long tail.
  • brain: To strike someone forcefully on the head
  • blood: Red liquid in the bodies of people and animals
  • kill: To cause someone to experience a lot of pain
  • flight: Act of leaving a place, usually to escape danger
  • pretty: Being attractive to the eye in a simple way
  • kilogram: 1000g
  • science: Study of the physical world, based on facts
  • noticeable: Being easy or likely to be sensed or noticed
  • heart: A feeling of care for others; compassion
  • stomach: Place in the body where food is processed
  • turn: To become (a particular age)
  • lion: Large wild cats from Africa and south Asia
  • story: One of many floors or levels in a building
  • decide: To make a choice or choose after thinking about it
  • high: Excited or relaxed from taking drugs
  • nervous: Concerning the system of nerves in the body
  • amount: Quantity of something
  • fight: To argue or quarrel with someone about something
  • system: Set of organized, planned ideas that work together
  • effect: An advantage, benefit
  • average: Total of numbers divided by the number of items
  • human: A person; a man, woman or child
  • tissue: Substance formed by cells of living thing; flesh
  • prevent: To stop something from happening or existing
  • flow: To move steadily and easily in a certain direction
  • awake: To make aware of (a certain feeling or memory)
  • shake: To cause someone to be surprised or upset
  • reduce: To try to decrease, e.g. your weight if overweight
  • user: Person that uses a service/thing, e.g. a website
  • volume: Number or amount of something e.g. sales
  • bind: To cover a wound, as with a bandage
  • addiction: Lack of control the overuse of something e.g. drugs
  • drug: Illegal substance taken for effect on the mind
  • literally: In a literal manner or sense; exactly as stated.
  • tighten: To make a rule, law or system tougher
  • interior: Part of country that is far from the border, coast
  • liver: Organ from animals served as food
  • stimulate: To arouse or excite emotionally
  • wisely: In an intelligent manner
  • dose: An amount of medicine to be taken at any one time
  • boost: To increase something; to make something better
  • transform: To change the shape completely in a good way
  • addict: Person who can’t control their overuse of a thing
  • barrier: Difficult situation preventing something happening
  • muscle: Physical power
  • alert: Being aware and able to respond quickly
  • flee: To leave somewhere urgently, to avoid danger
  • diminishing: To make something smaller or less important
  • interaction: Process of people or things affecting each other
  • span: Distance between two supports of a bridge
  • suppressor: Gene preventing the expression of other genes
  • bundle: A group of things that are tied/fastened together
  • lethal: Causing or able to cause death
  • suck: To be very bad, undesirable or unpleasant
  • caffeine: Substance in coffee, etc. that keeps you awake
  • adenosine: (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP
  • stimulant: Drug that increases physical or mental activity
  • dopamine: Drug used to treat shock and hypotension
  • adrenaline: Chemical in the body that responds to stress, fear
  • lipid: Fatty substance forming structure of living cells
  • jack: To increase the amount or intensity of something
  • epinephrine: Catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
  • soluble: Able to dissolve or be dissolved in a liquid
  • catnip: Hairy aromatic perennial herb having whorls of small white purple-spotted flowers in a terminal spike; used in the past as a domestic remedy; strongly attractive to cats
  • savannah: Flat grassland of tropical or subtropical regions
  • alertness: State of being aware and able to respond quickly
  • neurotransmitter: Chemical released by nerves that boost signals within the body
  • chick: A baby bird
  • chug: To move slowly making low sounds like steam trains
Placeholder Image

    Preparing usage notes, please check back later

  • not found vocabularyNo vocabulary matches your filters
    • act on

      US /ækt ɑn/

      UK /ækt ɔn/

      • Verb (Transitive/Intransitive)
      • To have an effect on something.
      • To take formal action or make a decision regarding something.
      • Phrasal Verb
      • To take action as a result of information received.
      • To have an effect on something.
      B1
      More
    • addict

      US /əˈdɪkt/

      UK /ˈædɪkt/

      • Noun
      • Person who can’t control their overuse of a thing
      B1
      More
    • addiction

      US /əˈdɪkʃən/

      UK /əˈdɪkʃn/

      • Noun (Countable/Uncountable)
      • Lack of control the overuse of something e.g. drugs
      • A compulsive physiological need for a habit-forming substance.
      B1TOEIC
      More
    • adrenaline

      US /əˈdrɛnəlɪn/

      UK /ə'drenəlɪn/

      • Noun (Countable/Uncountable)
      • Chemical in the body that responds to stress, fear
      • The intense excitement and energy felt when in a dangerous or exciting situation.
      C1
      More
    • alert

      US /əˈlɚt/

      UK /ə'lɜ:t/

      • Adjective
      • Being aware and able to respond quickly
      • Transitive Verb
      • To warn someone so they can respond to it
      B1TOEIC
      More
    • alertness

      US /ə'lɜ:tnəs/

      UK /ə'lɜ:tnəs/

      • Uncountable Noun
      • State of being aware and able to respond quickly
      B1
      More
    • at home

      US /æt hom/

      UK /æt həum/

      • Phrase
      • In one's own residence or country.
      • Adjective
      • Feeling comfortable and relaxed.
      More
    • at night

      US /æt naɪt/

      UK /æt nait/

      • Phrase
      • During the night; in the nighttime.
      A1
      More
    • average

      US /ˈævərɪdʒ, ˈævrɪdʒ/

      UK /'ævərɪdʒ/

      • Noun (Countable/Uncountable)
      • Total of numbers divided by the number of items
      • Transitive Verb
      • To add numbers then divide by the number of items
      A2TOEIC
      More
    • awake

      US /əˈwek/

      UK /əˈweɪk/

      • Verb (Transitive/Intransitive)
      • To make aware of (a certain feeling or memory)
      • To wake from sleep; wake someone from sleep
      • Adjective
      • Not asleep; up; alert
      A2
      More
    • back into

      US /bæk ˈɪntu/

      UK /bæk ˈɪntuː/

      • Phrasal Verb
      • To drive a vehicle backwards into a space or area.
      • To accidentally collide with something while moving backwards.
      A1
      More
    • barrier

      US /ˈbæriɚ/

      UK /'bærɪə(r)/

      • Noun
      • Difficult situation preventing something happening
      • Structure or object that stops free movement
      B1TOEIC
      More
    • bind

      US /baɪnd/

      UK /baɪnd/

      • Transitive Verb
      • To cover a wound, as with a bandage
      • To put pages and a cover together to create a book
      A2
      More
    • blood

      US /blʌd/

      UK /blʌd/

      • Uncountable Noun
      • Red liquid in the bodies of people and animals
      • Related by birth; family
      • Transitive Verb
      • To be initiated into something, e.g. a secret club
      A2
      More
    • body

      US /ˈbɑdi/

      UK /ˈbɒdi/

      • Noun
      • The physical structure of a person or animal.
      • Noun (Countable/Uncountable)
      • The main or central part of something.
      • The weight and texture of a drink (like wine or coffee) in the mouth.
      A2
      More
    • boost

      US /bust/

      UK /bu:st/

      • Transitive Verb
      • To increase something; to make something better
      • To push someone or something up from beneath them
      • Noun (Countable/Uncountable)
      • An increase in something
      B1TOEIC
      More
    • bundle

      US /ˈbʌndl/

      UK /ˈbʌndl/

      • Countable Noun
      • A group of things that are tied/fastened together
      • A set of products sold together cheaply
      • Transitive Verb
      • To fasten, tie or wrap several things together
      • To sell a set of products at a lower price
      B1
      More
    • caffeine

      US /kæˈfin, ˈkæfˌin, ˈkæfiɪn/

      UK /ˈkæfi:n/

      • Uncountable Noun
      • Substance in coffee, etc. that keeps you awake
      • The amount of caffeine in a substance.
      B2
      More
    • chick

      US /tʃɪk/

      UK /tʃɪk/

      • Countable Noun
      • A baby bird
      A2
      More
    • chug

      US /tʃʌɡ/

      UK /tʃʌɡ/

      • Intransitive Verb
      • To move slowly making low sounds like steam trains
      C1
      More
    • decide

      US /dɪˈsaɪd/

      UK /dɪ'saɪd/

      • Verb (Transitive/Intransitive)
      • To make a choice or choose after thinking about it
      • To make a legal judgment in court
      A2TOEIC
      More
    • diminishing

      US /dɪ'mɪnɪʃɪŋ/

      UK /dɪ'mɪnɪʃɪŋ/

      • Verb (Transitive/Intransitive)
      • To make something smaller or less important
      • To imply someone's reputation is less good
      • Adjective
      • Becoming smaller or less over a period of time.
      B1
      More
    • dose

      US /doʊs/

      UK /dəʊs/

      • Noun (Countable/Uncountable)
      • An amount of medicine to be taken at any one time
      • Transitive Verb
      • To give a certain amount of something to someone
      B1
      More
    • drug

      US /drʌɡ/

      UK /drʌɡ/

      • Noun (Countable/Uncountable)
      • Illegal substance taken for effect on the mind
      • Chemical used as a medicine
      • Transitive Verb
      • To give drugs to someone to make them sleep
      A2
      More
    • flee

      US /fli/

      UK /fli:/

      • Intransitive Verb
      • To leave somewhere urgently, to avoid danger
      B1
      More
    • flight

      US /flaɪt/

      UK /flaɪt/

      • Noun (Countable/Uncountable)
      • Act of leaving a place, usually to escape danger
      • Trip by plane, helicopter etc.
      A2TOEIC
      More
    • flow

      US /flo/

      UK /fləʊ/

      • Intransitive Verb
      • To move steadily and easily in a certain direction
      • Uncountable Noun
      • Amount of something that moves through an area
      A2
      More
    • go forth

      US /ɡo fɔrθ/

      UK /ɡəu fɔ:θ/

      • Phrasal Verb
      • To begin or proceed with something, especially after hesitation or delay.
      • To leave a place, especially to embark on a journey or mission.
      C2
      More
    • got to

      US /ɡɑt tu/

      UK /gɔt tu:/

      • Verb (Transitive/Intransitive)
      • To arrive at some place
      • To have the opportunity or permission to do something
      • Phrasal Verb
      • To appeal to the emotions of; move
      • To finally begin to start something after a delay
      A1
      More
    • have to

      US /hæv tu/

      UK /ˈhæv tə/

      • Auxiliary Verb
      • Must do
      A1
      More
    • interaction

      US /ˌɪntɚˈækʃən/

      UK /ˌɪntər'ækʃn/

      • Noun (Countable/Uncountable)
      • Process of people or things affecting each other
      • The activity of talking to other people, working together etc
      A2
      More
    • interior

      US /ɪnˈtɪriɚ/

      UK /ɪn'tɪərɪə(r)/

      • Noun (Countable/Uncountable)
      • Part of country that is far from the border, coast
      • Remote central area of a continent
      • Adjective
      • Being the inside part of a building, car etc.
      B1TOEIC
      More
    • just kind of

      US

      UK

      • Phrase
      • Used to express a feeling or state in a vague or hesitant way.
      • Used to indicate something is approximately or generally similar to something else.
      A2
      More
    • kill me

      US

      UK

      • Interjection
      • An exaggerated expression of frustration or annoyance.
      • Phrase
      • A direct request to end one's life, often due to unbearable suffering.
      A2
      More
    • kilogram

      US /ˈkɪləɡræm/

      UK /ˈkɪləgræm/

      • Noun (Countable/Uncountable)
      • 1000g
      A2
      More
    • lethal

      US /ˈliθəl/

      UK /'li:θl/

      • Adjective
      • Causing or able to cause death
      B2
      More
    • lion

      US /ˈlaɪən/

      UK /ˈlaɪən/

      • Noun (Countable/Uncountable)
      • Large wild cats from Africa and south Asia
      B1
      More
    • literally

      US /ˈlɪtərəli/

      UK

      • Adverb
      • In a literal manner or sense; exactly as stated.
      • Used for emphasis to describe something that is actually true, often to highlight surprise or intensity.
      B1
      More
    • liver

      US /ˈlɪvɚ/

      UK /ˈlɪvə(r)/

      • Noun (Countable/Uncountable)
      • Organ from animals served as food
      • Organ that absorbs food and cleans the blood
      B1
      More
    • muscle

      US /ˈmʌsəl/

      UK /'mʌsl/

      • Uncountable Noun
      • Physical power
      • Power or influence, especially of an economic or political kind.
      • Transitive Verb
      • To use or muscles of force to get what you want
      A2
      More
    • noticeable

      US /ˈnoʊtɪsəbl/

      UK /ˈnəʊtɪsəbl/

      • Adjective
      • Being easy or likely to be sensed or noticed
      B1
      More
    • pass through

      US /pæs θru/

      UK /pɑ:s θru:/

      • Phrasal Verb
      • To experience something, often unpleasant or difficult.
      • To go through something; to move from one side to the other of something.
      A2
      More
    • prevent

      US /prɪˈvɛnt/

      UK /prɪ'vent/

      • Transitive Verb
      • To stop something from happening or existing
      A2TOEIC
      More
    • reduce

      US /rɪˈdus, -ˈdjus/

      UK /rɪ'dju:s/

      • Verb (Transitive/Intransitive)
      • To try to decrease, e.g. your weight if overweight
      • To boil a liquid until it has decreased in amount
      A2TOEIC
      More
    • savannah

      US /sə'vænə/

      UK /sə'vænə/

      • Noun (Countable/Uncountable)
      • Flat grassland of tropical or subtropical regions
      • A city in Georgia, USA, known for its history and architecture.
      C1
      More
    • science

      US /ˈsaɪəns/

      UK /'saɪəns/

      • Uncountable Noun
      • Study of the physical world, based on facts
      A2TOEIC
      More
    • shake

      US /ʃek/

      UK /ʃeɪk/

      • Verb (Transitive/Intransitive)
      • To cause someone to be surprised or upset
      • To cause a belief, idea, or feeling to weaken
      • Countable Noun
      • Drink made by shaking milk with fruit or flavors
      A2
      More
    • soluble

      US /ˈsɑ:ljəbl/

      UK /ˈsɒljəbl/

      • Adjective
      • Able to dissolve or be dissolved in a liquid
      • Able to be solved
      B2
      More
    • span

      US /spæn/

      UK /spæn/

      • Noun (Countable/Uncountable)
      • Distance between two supports of a bridge
      • Period of time that something continues for
      • Verb (Transitive/Intransitive)
      • To go across a certain distance between things
      • To cover or extend over a time period
      B1TOEIC
      More
    • stimulant

      US /ˈstɪmjələnt/

      UK /ˈstɪmjələnt/

      • Noun
      • Drug that increases physical or mental activity
      B2
      More
    • stimulate

      US /ˈstɪmjəˌlet/

      UK /'stɪmjʊleɪt/

      • Transitive Verb
      • To arouse or excite emotionally
      B1
      More
    • stomach

      US /ˈstʌmək/

      UK /'stʌmək/

      • Noun
      • Place in the body where food is processed
      • Verb (Transitive/Intransitive)
      • to be able to accept something unpleasant
      A2
      More
    • suck

      US /sʌk/

      UK /sʌk/

      • Intransitive Verb
      • To be very bad, undesirable or unpleasant
      • Transitive Verb
      • To pull or remove something with great power
      • To attract someone; make someone interested
      B1
      More
    • sugar

      US /ˈʃʊɡɚ/

      UK /ˈʃʊgə(r)/

      • Uncountable Noun
      • Substance which the body stores or uses for energy
      • White sweet substance used to make foods sweeter
      • Countable Noun
      • Amount of sugar contained in a small spoon
      A2
      More
    • suppressor

      US /səˈprɛsɚ/

      UK /səˈpresə(r)/

      • Noun
      • Gene preventing the expression of other genes
      B1
      More
    • tighten

      US /ˈtaɪtn:/

      UK /ˈtaɪtn/

      • Transitive Verb
      • To make a rule, law or system tougher
      • To stretch, pull until movement becomes difficult
      A2
      More
    • tighten up

      US /ˈtaɪtn: ʌp/

      UK /ˈtaɪtn ʌp/

      • Phrasal Verb
      • To make stricter or more secure.
      • To make something physically firmer or tighter.
      A1
      More
    • tissue

      US /ˈtɪʃu/

      UK /ˈtɪʃu:/

      • Noun (Countable/Uncountable)
      • Substance formed by cells of living thing; flesh
      • Kind of thin, light paper used to pack objects
      A2
      More
    • to death

      US /tu dɛθ/

      UK /tu: deθ/

      • Phrase
      • Extremely; to a great degree
      • Until death
      B1
      More
    • transform

      US /trænsˈfɔrm/

      UK /træns'fɔ:m/

      • Transitive Verb
      • To change the shape completely in a good way
      • To convert from one form or substance into another.
      C2
      More
    • volume

      US /ˈvɑljum, -jəm/

      UK /ˈvɒlju:m/

      • Noun (Countable/Uncountable)
      • Number or amount of something e.g. sales
      • Amount of space that something takes up
      • Countable Noun
      • One book that is part of a set of books
      A2
      More
    • wisely

      US /ˈwaɪzlɪ/

      UK /waɪzlɪ/

      • Adverb
      • In an intelligent manner
      A2
      More
    Video not in English?
    Video not in English?

    Get the full experience in the app

    Learn anywhere with detailed sentence and usage analysis

    preview
    01:03

    She took a brave step forward, leaving behind her comfort zone to chase her dreams.

    Vocabulary
    • brave

      adj. Having courage

    • comfort zone

      phr. A familiar situation where one feels safe

    Explanation
    a brave step is a noun phrase, where brave is an adjective modifying the noun step, meaning "a courageous step". forward is an adverb modifying step, meaning "ahead". The whole phrase serves as the object, answering the "what" of took (verb) — she took a brave step forward.

    Get the full experience in the app

    Look up words anytime with pronunciation, part of speech, and usage

    preview

    brave

    US/brev/
    UK/breɪv/
    adj.Brave
    v.t.To bravely face
    A2 Elementary

    Get the full experience in the app

    Practice speaking anytime and get instant pronunciation feedback

    preview

    Try this speaking exercise.

    Try practicing with this sentence.

    80
    B2
    #caffeine#adenosine#stimulant#dopamine#cup#slowing

    Caffeine!! - Bite Sci-zed !

    0
    VoiceTube posted on 2013/03/19
    Ever wonder why that cup of coffee gives you such a buzz? This video dives deep into the science of caffeine, explaining how it affects your brain and body with some seriously cool vocabulary you can use every day! You'll pick up advanced terms related to physiology and stimulants, all explained with simple sentence structures.

    Learn this video on the APP!

    The VoiceTube App has more in-depth practice for videos!

    Recommended Videos

    Auto Next Video

    Footer

    Download on the App StoreGet it on Google Play

    About

    • About Us
    • Our Learning Services
    • Join Us
    • FAQ
    • Hot Tags

    Services

    • Pronunciation Challenge
    • Saved
    • Search Vocabulary
    • Blog

    Channels

    Levels

    • A1
    • A2
    • B1
    • B2
    • C1
    • C2

    Privacy˙Terms˙
    ©2026 VoiceTube Corporation. All rights reserved