Vocabulary

  • talking about: To discuss a particular topic.
  • have to: Must do
  • think about: To consider something carefully.
  • wake up: To stop sleeping
  • work on: To devote effort to improve or develop something
  • stay up: To not go to bed until late
  • do in: To make completely tired out and exhausted
  • at a time: Separately; one by one
  • going on: To continue doing something
  • look at: To use your eyes to focus on something
  • in school: Attending an educational institution.
  • at least: As a minimum
  • let out: To allow a person, animal to leave the room, house
  • rely on: To depend on someone or something
  • know about: To have information or understanding of a subject or situation.
  • neurodegenerative diseases: Diseases characterized by the progressive degeneration and death of nerve cells in the brain and spinal cord.
  • increased risk: A greater chance of something harmful or dangerous happening.
  • carry out
  • in person: Physically present; not by proxy or remotely.
  • pass out: To distribute or hand out papers to people
  • back up: To save a copy of your computer data
  • figure out: To understand the behavior of someone
  • in order to: For the purpose of; with the aim of.
  • in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
  • got to: To arrive at some place
  • at home: In one's own residence or country.
  • back down: To admit you were wrong; stop claiming
  • drop into: To visit someone or some place casually and often briefly.
  • in places: In some locations but not others
  • just kind of: Used to express a feeling or state in a vague or hesitant way.
  • third year: The third year of a course of study, especially at a university or college.
  • of a sudden: Quickly and unexpectedly; suddenly.
  • drift off: To gradually fall asleep.
  • come from: To have as your native country or city
  • in tandem: (Of two people/organizations) working together
  • jump out: To suddenly appear or move forward, often to surprise someone.
  • in terms of
  • with respect to: In relation to; regarding.
  • much about: A lot of information or knowledge concerning something.
  • work in: To make an opening for something in your schedule
  • lay out: To show or explain your plans carefully
  • for example: As an illustration or instance.
  • as a consequence of: Because of; due to something that happened before.
  • in particular: Specifically; especially.
  • for instance: As an example.
  • of use: Having practical value; useful or helpful.
  • build up: To increase the amount; collect something
  • incredibly important: Extremely significant or crucial.
  • cognitive: The process of knowing and remembering
  • process: To organize and use data in a computer
  • rhythm: Pattern of events, motions, or changes
  • fascinating: To attract or interest greatly
  • term: Conditions applying to an agreement, contract
  • flip: To turn your body in the air, as in gymnastics
  • consequence: Importance of a person or thing
  • develop: To explain something in steps and in detail
  • disease: Illness that affects a person, animal, or plant
  • amount: Quantity of something
  • measure: Plan to achieve a desired result
  • dementia: Illness characterized by loss of memory
  • arousal: Being woken up from sleep; sexual excitement
  • brain: To strike someone forcefully on the head
  • circadian: Concerning biological processes occurring at -hour intervals
  • optimal: Best or most desirable; best possible
  • surface: To give (road) a top layer
  • regulate: To control something with rules or laws
  • melatonin: Hormone secreted by the pineal gland
  • survive: To continue to live despite illness or trouble
  • transition: Change from one state, movement, place to another
  • risk: To do something potentially dangerous or foolish
  • relate: To demonstrate a logical relationship between
  • participant: Person involved or included in something
  • gland: Organ that produces substances for the body to use
  • promote: To try to encourage popularity/sales of a product
  • activity: An action or task, e.g. sports, washing clothes
  • biological: Being related to life and living things
  • lot: What happens to a person in life from chance; fate
  • analysis: Careful study to better understand something
  • important: Having power or authority
  • science: Study of the physical world, based on facts
  • kind: In a caring and helpful manner
  • learn: To get knowledge or skills by study or experience
  • spend: To use money to pay for something
  • alertness: State of being aware and able to respond quickly
  • system: Set of organized, planned ideas that work together
  • breathe: To move air into and out of your lungs
  • schedule: A list of events and their times
  • awake: To make aware of (a certain feeling or memory)
  • drive: A person's ambition and motivation to do something
  • excellent: Extremely good
  • neuroscience: Scientific study of the nervous system
  • nap: To sleep or rest for a short time during the day
  • nucleus: Center of an atom
  • flop: To fall heavily, usually in a relaxed manner
  • dorsal: Of the back of an animal, plane, etc.
  • balloon: Thin bag of rubber filled with air, used as a toy
  • giraffe: Tall African animal with very long neck and legs
  • dolphin: Sea animal like a big fish that breathes air
  • nighttime: Time after sunset and before sunrise
  • ad: Public notice or advertisement
  • sleepiness: Very sleepy state
  • daytime: The time of day you can see the sun
  • beta: Test version of a product or software
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  • not found vocabularyNo vocabulary matches your filters
    • ad

      US /æd/

      UK /æd/

      • Noun (Countable/Uncountable)
      • Public notice or advertisement
      C2TOEIC
      More
    • alertness

      US /ə'lɜ:tnəs/

      UK /ə'lɜ:tnəs/

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

      US /əˈnælɪsɪs/

      UK /əˈnæləsɪs/

      • Uncountable Noun
      • Careful study to better understand something
      B1TOEIC
      More
    • arousal

      US /ə'raʊzl/

      UK /ə'raʊzl/

      • Noun
      • Being woken up from sleep; sexual excitement
      B2
      More
    • as a consequence of

      US /əz ə ˈkɑnsəkwəns ʌv/

      UK /əz ə ˈkɒnsikwəns əv/

      • other
      • Because of; due to something that happened before.
      B2
      More
    • at a time

      US /æt e taɪm/

      UK /æt ə taim/

      • Phrase
      • Separately; one by one
      • Simultaneously; together
      A1
      More
    • at home

      US /æt hom/

      UK /æt həum/

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

      US /æt list/

      UK /æt li:st/

      • Adverb
      • As a minimum
      • Not less than
      • Phrase
      • No less than; at the minimum
      • Used to indicate that something is positive in a bad situation.
      C2
      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 down

      US /bæk daʊn/

      UK /bæk daun/

      • Phrasal Verb
      • To admit you were wrong; stop claiming
      A1
      More
    • back up

      US /bæk ʌp/

      UK /bæk ʌp/

      • Phrasal Verb
      • To save a copy of your computer data
      • To confirm the truth of what someone says
      A1
      More
    • balloon

      US /bəˈlun/

      UK /bəˈlu:n/

      • Countable Noun
      • Thin bag of rubber filled with air, used as a toy
      • Large air-filled bag to carry people into the air
      • Verb (Transitive/Intransitive)
      • To grow larger quickly; spring up suddenly
      • To travel in a large balloon
      B1
      More
    • beta

      US /'beɪtə/

      UK /'bi:tə/

      • Noun
      • Test version of a product or software
      B2
      More
    • biological

      US /ˌbaɪəˈlɑdʒɪkəl/

      UK /ˌbaɪəˈlɒdʒɪkl/

      • Adjective
      • Being related to life and living things
      • A substance, such as a detergent, that contains enzymes.
      B1
      More
    • breathe

      US /brið/

      UK /bri:ð/

      • Verb (Transitive/Intransitive)
      • To move air into and out of your lungs
      • To say something very softly
      A2
      More
    • build up

      US /bɪld ʌp/

      UK /bild ʌp/

      • Phrasal Verb
      • To increase the amount; collect something
      • To develop or increase something in stages
      • Verb (Transitive/Intransitive)
      • To increase or develop something gradually.
      • To praise or encourage someone.
      A1
      More
    • carry out

      US /ˈkæri aʊt/

      UK /ˈkæri aut/

      • Phrasal Verb
      • To fulfill or perform your instructions, duty
      • Verb (Transitive/Intransitive)
      • To perform or execute a task, order, or plan.
      • To remove something or someone from a place.
      A1
      More
    • cognitive

      US /ˈkɑɡnɪtɪv/

      UK /ˈkɒgnətɪv/

      • Adjective
      • The process of knowing and remembering
      • Relating to the ability to think and reason.
      C1
      More
    • come from

      US /kʌm frʌm/

      UK /kʌm frɔm/

      • Phrasal Verb
      • To have as your native country or city
      A1
      More
    • consequence

      US /ˈkɑnsɪˌkwɛns,-kwəns/

      UK /ˈkɔnsikwəns/

      • Noun (Countable/Uncountable)
      • Importance of a person or thing
      • Outcome of an event; result
      A2
      More
    • daytime

      US /ˈdeˌtaɪm/

      UK /ˈdeɪtaɪm/

      • Noun
      • The time of day you can see the sun
      • Adjective
      • Relating to or happening during the day.
      B1
      More
    • dementia

      US /dɪˈmɛnʃə/

      UK /dɪˈmenʃə/

      • Uncountable Noun
      • Illness characterized by loss of memory
      B2
      More
    • disease

      US /dɪˈziz/

      UK /dɪˈzi:z/

      • Noun (Countable/Uncountable)
      • Illness that affects a person, animal, or plant
      • A disorder of structure or function in a plant, especially one caused by a pathogen.
      • Transitive Verb
      • To affect with disease; to corrupt or sicken.
      A2TOEIC
      More
    • do in

      US

      UK

      • Phrasal Verb
      • To make completely tired out and exhausted
      • To destroy or cause damage to someone
      A1
      More
    • dolphin

      US /ˈdɑ:lfɪn/

      UK /ˈdɒlfɪn/

      • Countable Noun
      • Sea animal like a big fish that breathes air
      B1
      More
    • dorsal

      US /ˈdɔrsəl/

      UK /'dɔ:sl/

      • Adjective
      • Of the back of an animal, plane, etc.
      C2
      More
    • drift off

      US /drɪft ɔf/

      UK /drift ɔf/

      • Phrasal Verb
      • To gradually fall asleep.
      C2
      More
    • drop into

      US

      UK

      • Phrasal Verb
      • To visit someone or some place casually and often briefly.
      • To descend or fall into a state or condition.
      B1
      More
    • excellent

      US /ˈɛksələnt/

      UK /ˈeksələnt/

      • Adjective
      • Extremely good
      • Very skilled; having great ability.
      A2TOEIC
      More
    • fascinating

      US /ˈfæsəˌnetɪŋ/

      UK /ˈfæsɪneɪtɪŋ/

      • Transitive Verb
      • To attract or interest greatly
      • To hold someone captive with a gaze or other means.
      • Adjective
      • Having your attention fixated as though by a spell
      B1
      More
    • figure out

      US /ˈfɪɡjɚ aʊt/

      UK /ˈfiɡə aut/

      • Phrasal Verb
      • To understand the behavior of someone
      • To think through logically to find a solution
      • Verb (Transitive/Intransitive)
      • To understand or find an answer to something.
      • To find a solution to a problem or understand something.
      A1
      More
    • flip

      US /flɪp/

      UK /flɪp/

      • Verb (Transitive/Intransitive)
      • To turn your body in the air, as in gymnastics
      • To move into a different position quickly
      • Noun
      • Act of turning your body in the air; somersault
      • Movement of something from one position to another
      B2
      More
    • flop

      US /flɑ:p/

      UK /flɒp/

      • Intransitive Verb
      • To fall heavily, usually in a relaxed manner
      • To move loosely and without precision
      • Noun
      • Book, movie etc. that is a total sales failure
      • Sound of something large hitting water
      B2TOEIC
      More
    • for example

      US

      UK

      • Phrase
      • As an illustration or instance.
      More
    • for instance

      US /fɔr ˈɪnstəns/

      UK /fɔ: ˈinstəns/

      • Adverb
      • As an example.
      • Phrase
      • As an example.
      • As an illustration or case in point
      B1
      More
    • giraffe

      US /dʒəˈræf/

      UK /dʒəˈrɑ:f/

      • Noun (Countable/Uncountable)
      • Tall African animal with very long neck and legs
      C1
      More
    • gland

      US /ɡlænd/

      UK /ɡlænd/

      • Noun
      • Organ that produces substances for the body to use
      B2
      More
    • going on

      US /ˈɡoɪŋ ɑn/

      UK /ˈgəʊɪŋ ɔn/

      • Phrasal Verb
      • To continue doing something
      • To happen (usually negative)
      A1
      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
    • in fact

      US /ɪn fækt/

      UK /in fækt/

      • Adverb
      • Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
      • Used to introduce a more detailed or surprising piece of information.
      • Phrase
      • Used to emphasize the truth of a statement, especially one that is surprising or contrary to what might be expected.
      C1
      More
    • in order to

      US /ɪn ˈɔrdɚ tu/

      UK /in ˈɔ:də tu:/

      • Preposition
      • For the purpose of; with the aim of.
      • Phrase
      • In a specific sequence or arrangement.
      • With the aim of; for the purpose of.
      C1
      More
    • in particular

      US /ɪn pɚˈtɪkjəlɚ/

      UK /in pəˈtikjulə/

      • Phrase
      • Specifically; especially.
      • Detailed or precise.
      A1
      More
    • in person

      US /ɪn ˈpɜːrsn/

      UK /in ˈpɜːsn/

      • Adverb
      • Physically present; not by proxy or remotely.
      • Face-to-face; not through electronic communication.
      A1
      More
    • in places

      US

      UK

      • Phrase
      • In some locations but not others
      A1
      More
    • in school

      US /ɪn skul/

      UK /ɪn sku:l/

      • other
      • Attending an educational institution.
      A1
      More
    • in tandem

      US /ɪn ˈtændəm/

      UK /in ˈtændəm/

      • Phrase
      • (Of two people/organizations) working together
      C1
      More
    • in terms of

      US

      UK

      • Phrase
      • With regard to; concerning a particular aspect.
      A1
      More
    • increased risk

      US

      UK

      • Noun
      • A greater chance of something harmful or dangerous happening.
      • A higher probability of financial loss in an investment.
      B2
      More
    • incredibly important

      US

      UK

      • Adjective
      • Extremely significant or crucial.
      A1
      More
    • jump out

      US /dʒʌmp aʊt/

      UK /dʒʌmp aut/

      • Phrasal Verb
      • To suddenly appear or move forward, often to surprise someone.
      • To be very obvious or easily noticeable.
      A2
      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
    • know about

      US /noʊ əˈbaʊt/

      UK /nəʊ əˈbaut/

      • Phrasal Verb
      • To have information or understanding of a subject or situation.
      More
    • lay out

      US /le aʊt/

      UK /lei aut/

      • Phrasal Verb
      • To show or explain your plans carefully
      • To spread something out; arrange something in a particular way.
      • Verb (Transitive/Intransitive)
      • To arrange according to a plan or design.
      • To spread out for viewing; display.
      A2
      More
    • let out

      US /lɛt aʊt/

      UK /let aut/

      • Phrasal Verb
      • To allow a person, animal to leave the room, house
      • To allow to leave; to release.
      • Verb (Transitive/Intransitive)
      • To enlarge a garment by releasing a seam or adding material.
      • To release or allow to escape.
      A1
      More
    • look at

      US /lʊk æt/

      UK /luk æt/

      • Phrasal Verb
      • To use your eyes to focus on something
      • To focus your eyes on something carefully
      A1
      More
    • melatonin

      US //mel.əˈtoʊ.nɪn//

      UK //mel.əˈtəʊ.nɪn//

      • Uncountable Noun
      • Hormone secreted by the pineal gland
      • A synthetic form of the hormone melatonin, often taken as a dietary supplement to promote sleep.
      B1
      More
    • much about

      US /mʌtʃ əˈbaʊt/

      UK /mʌtʃ əˈbaut/

      • Phrase
      • A lot of information or knowledge concerning something.
      • To a great extent or degree regarding something; caring.
      A1
      More
    • nap

      US /næp/

      UK /næp/

      • Intransitive Verb
      • To sleep or rest for a short time during the day
      • Noun (Countable/Uncountable)
      • Brief period of sleep or rest during the day
      B2
      More
    • neurodegenerative diseases

      US

      UK

      • Noun (Countable/Uncountable)
      • Diseases characterized by the progressive degeneration and death of nerve cells in the brain and spinal cord.
      B1
      More
    • nighttime

      US /'naɪtˌtaɪm/

      UK /'naɪttaɪm/

      • Uncountable Noun
      • Time after sunset and before sunrise
      C2
      More
    • nucleus

      US /ˈnu:kliəs/

      UK /ˈnju:kliəs/

      • Noun
      • Center of an atom
      • Control center of a cell
      B2
      More
    • of a sudden

      US

      UK

      • Phrase
      • Quickly and unexpectedly; suddenly.
      B2
      More
    • of use

      US /ʌv jus/

      UK /əv ju:s/

      • other
      • Having practical value; useful or helpful.
      B1
      More
    • optimal

      US /ˈɑptəməl/

      UK /ˈɒptɪməl/

      • Adjective
      • Best or most desirable; best possible
      • Most conducive to a favorable outcome.
      B2
      More
    • participant

      US /pɑrˈtɪsəpənt/

      UK /pɑ:ˈtɪsɪpənt/

      • Countable Noun
      • Person involved or included in something
      B1
      More
    • pass out

      US /pæs aʊt/

      UK /pɑ:s aut/

      • Phrasal Verb
      • To distribute or hand out papers to people
      • To faint; lose consciousness
      A1
      More
    • process

      US /ˈprɑsˌɛs, ˈproˌsɛs/

      UK /prə'ses/

      • Transitive Verb
      • To organize and use data in a computer
      • To deal with official forms in the way required
      • Noun (Countable/Uncountable)
      • Dealing with official forms in the way required
      • Set of changes that occur slowly and naturally
      A2TOEIC
      More
    • promote

      US /prəˈmoʊt/

      UK /prəˈməʊt/

      • Transitive Verb
      • To try to encourage popularity/sales of a product
      • To move someone to a higher position or rank
      A2TOEIC
      More
    • regulate

      US /ˈrɛɡjəˌlet/

      UK /ˈregjuleɪt/

      • Transitive Verb
      • To control something with rules or laws
      • To set/adjust (a clock, etc.); restrict motion in
      A2TOEIC
      More
    • relate

      US /rɪˈlet/

      UK /rɪ'leɪt/

      • Transitive Verb
      • To demonstrate a logical relationship between
      • To understand or sympathize with, e.g. a problem
      A2TOEIC
      More
    • rely on

      US /rɪˈlaɪ ɑn/

      UK /riˈlai ɔn/

      • Phrasal Verb
      • To depend on someone or something
      A2
      More
    • rhythm

      US /ˈrɪðəm/

      UK /ˈrɪðəm/

      • Noun (Countable/Uncountable)
      • Pattern of events, motions, or changes
      • A pattern of sound and beats in music
      A2
      More
    • schedule

      US /ˈskedʒu:l/

      UK /ˈʃedju:l/

      • Noun (Countable/Uncountable)
      • A list of events and their times
      • A plan to do something at a certain time
      • Transitive Verb
      • To plan to do something at a certain time
      A2TOEIC
      More
    • science

      US /ˈsaɪəns/

      UK /'saɪəns/

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

      US / ˈslipɪnɪs/

      UK /'sli:pɪnəs/

      • Uncountable Noun
      • Very sleepy state
      B1
      More
    • spend

      US /spɛnd/

      UK /spend/

      • Transitive Verb
      • To use money to pay for something
      • To use time in order to do something
      A2TOEIC
      More
    • stay up

      US /ste ʌp/

      UK /stei ʌp/

      • Phrasal Verb
      • To not go to bed until late
      A1
      More
    • surface

      US /ˈsɚfəs/

      UK /'sɜ:fɪs/

      • Transitive Verb
      • To give (road) a top layer
      • Intransitive Verb
      • To appear after being hidden, unseen, or unknown
      • To come to the top of something; emerge
      A2TOEIC
      More
    • survive

      US /sɚˈvaɪv/

      UK /sə'vaɪv/

      • Intransitive Verb
      • To continue to live despite illness or trouble
      A2TOEIC
      More
    • talking about

      US

      UK

      • Phrasal Verb
      • To discuss a particular topic.
      • To be constantly mentioning or bringing up a subject.
      A1
      More
    • think about

      US /θɪŋk əˈbaʊt/

      UK /θiŋk əˈbaut/

      • Phrasal Verb
      • To consider something carefully.
      • To remember or call to mind.
      A1
      More
    • third year

      US

      UK

      • Noun
      • The third year of a course of study, especially at a university or college.
      A2
      More
    • transition

      US /trænˈzɪʃən, -ˈsɪʃ-/

      UK /trænˈzɪʃn/

      • Noun
      • Change from one state, movement, place to another
      • Intransitive Verb
      • To change state, movement, place, or subject
      B1
      More
    • wake up

      US /wek ʌp/

      UK /weik ʌp/

      • Phrasal Verb
      • To stop sleeping
      • To become fully aware and alert to a situation.
      A1
      More
    • with respect to

      US /wɪð rɪˈspɛkt tu/

      UK /wið risˈpekt tu:/

      • Preposition
      • In relation to; regarding.
      • Phrase
      • In relation to; concerning.
      A1
      More
    • work in

      US /wɚk ɪn/

      UK /wə:k in/

      • Phrasal Verb
      • To make an opening for something in your schedule
      • To fit person/thing into a schedule or sequence
      A1
      More
    • work on

      US /wɚk ɑn/

      UK /wə:k ɔn/

      • Phrasal Verb
      • To devote effort to improve or develop something
      • To try to persuade or influence someone.
      A1
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    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.

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    brave

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

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    A2
    #sleep#kind#brain#rem#melatonin#wake

    「質の良い睡眠」って何?5段階のレベルで説明 | 5 Levels | WIRED Japan

    0
    林宜悉 posted on 2025/04/12
    Ever wondered what makes sleep truly 'good'? This video breaks down the science behind quality sleep, from circadian rhythms to REM and slow-wave stages, using simple language and practical examples. You'll pick up advanced vocabulary related to sleep science and learn useful phrases for everyday conversations!

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