Vocabulary

  • in time: Eventually; after a period of time.
  • with time: As time passes; eventually.
  • slow down: To reduce the speed
  • based on: To use something as the foundation or starting point for something else.
  • over time: Gradually; as time passes.
  • out there: In or to a place that is far away
  • at once: Immediately; without delay
  • to do with: To be about something; concern
  • with respect to: In relation to; regarding.
  • depending on: To rely on for support (financial or emotional)
  • in particular: Specifically; especially.
  • on earth: Used to emphasize a question expressing surprise or anger.
  • for someone: On behalf of or intended for a particular person.
  • compared with: In relation to
  • set up
  • in contrast to: Differing from something else
  • for the most part: Generally; mostly; on the whole.
  • things change: Circumstances or situations do not remain constant; they evolve or transform over time.
  • in the world: Used to emphasize a question expressing surprise, confusion, disbelief
  • at least: As a minimum
  • for example: As an illustration or instance.
  • highly unlikely: Not likely to happen or be true; improbable.
  • for instance: As an example.
  • put back: To return something to the proper place
  • in the past: During a former period of time; previously.
  • in the future: At a later time; in times to come.
  • come back: To reply to someone, often forcefully
  • allow for: To take into consideration
  • think of: To look on as (being something specific); consider
  • shut off: To stop the movement of something, such as water
  • for now: Temporarily; for the present time.
  • no matter: Regardless of; it does not matter.
  • look at: To use your eyes to focus on something
  • stuff: Generic description for things, materials, objects
  • crucial: Extremely important or necessary
  • massive: Very big; large; too big
  • enormous: Huge; very big; very important
  • demonstrate: To display a feeling or ability openly
  • concept: Abstract idea of something or how it works
  • experience: Thing a person has done or that happened to them
  • realize: To become aware of or understand mentally
  • psychological: Concerning the study of the mind
  • general: Widespread, normal or usual
  • fundamental: Forming a necessary part, base, or core
  • incorporate: To form into a company or business corporation
  • gravity: (Of a situation) extreme seriousness
  • mysterious: Unusual; hard to understand or work out
  • theory: Ideas or principles that explain facts or events
  • reverse: Setting that makes the vehicle go backward
  • universe: All of space that contains planets and stars
  • fabric: Cloth or material
  • direction: When someone tells people what to do
  • effect: An advantage, benefit
  • actual: Real or existing in fact, not imagined; real
  • perpetual: Continuing forever
  • theoretically: As regards ideas that could be true
  • fit: Good looking; physically attractive
  • detect: To discover or identify the presence of something
  • framework: Skeleton structure of a building or construction
  • object: Something you can see or touch, but is not alive
  • suggest: To mention something that could be done; propose
  • proportion: A part of a whole thing
  • century: Period of 100 years
  • formation: Process of creating; making a particular shape
  • solely: With no one or nothing else
  • puzzle: To be a challenge to understand; confuse
  • decay: To be slowly destroyed by natural processes; rot
  • prefer: To like something better than something else
  • system: Set of organized, planned ideas that work together
  • build: Your physical shape; physique
  • violate: To abuse, damage or disrespect
  • weave: To make a cloth or baskets by crossing threads
  • proposition: General claim or theory
  • space: Empty area kept for a specific reason, like a car
  • change: To exchange one set of clothes for another
  • difference: A thing or issue that people do not agree about
  • gravitational: Concerning the force of gravity
  • future: Time that is to come after the present
  • forbid: To order someone not to do something
  • constitute: To become a group of
  • fast: In a way that is difficult to move or change
  • arrow: Symbol used on road signs to show direction
  • relentlessly: Continuing without slowing or losing strength
  • immutable: Not capable of or susceptible to change
  • continuum: A continuation without noticeable divisions
  • astronomer: Scientist studying stars and other bodies in space
  • warp: Twist or bend in something normally straight
  • physicist: Person who studies and works in physics
  • entropy: Lack of order in a system
  • relativity: Einstein theory about time, space and position
  • spaceship: Spacecraft designed to travel into space
Placeholder Image

Preparing usage notes, please check back later

  • not found vocabularyNo vocabulary matches your filters
    • actual

      US /ˈæktʃuəl/

      UK /ˈæktʃuəl/

      • Adjective
      • Real or existing in fact, not imagined; real
      • Current; existing at the present time.
      A2TOEIC
      More
    • allow for

      US

      UK

      • Verb (Transitive/Intransitive)
      • To take into consideration
      A1
      More
    • arrow

      US /ˈæroʊ/

      UK /ˈærəʊ/

      • Noun
      • Symbol used on road signs to show direction
      • A long pointed piece of wood shot from a bow
      B1
      More
    • astronomer

      US /əˈstrɑ:nəmə(r)/

      UK /əˈstrɒnəmə(r)/

      • Countable Noun
      • Scientist studying stars and other bodies in space
      B2
      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
    • at once

      US /æt wʌns/

      UK /æt wʌns/

      • Adverb
      • Immediately; without delay
      • At the same time; simultaneously
      A2
      More
    • based on

      US

      UK

      • Phrasal Verb
      • To use something as the foundation or starting point for something else.
      • Preposition
      • Using something as the main idea or foundation.
      • Relying on something as evidence or justification.
      A1
      More
    • come back

      US /kʌm bæk/

      UK /kʌm bæk/

      • Phrasal Verb
      • To reply to someone, often forcefully
      • To be remembered
      A1
      More
    • compared with

      US /kəmˈpɛrd wɪð/

      UK /kəmˈpeəd wið/

      • Preposition
      • In relation to
      • Verb (Transitive/Intransitive)
      • To have examined the differences or similarities between two or more things.
      A1
      More
    • concept

      US /ˈkɑnˌsɛpt/

      UK /'kɒnsept/

      • Noun (Countable/Uncountable)
      • Abstract idea of something or how it works
      • A plan or intention; a conception.
      A2TOEIC
      More
    • constitute

      US /ˈkɑnstɪˌtut, -ˌtjut/

      UK /'kɒnstɪtju:t/

      • Transitive Verb
      • To become a group of
      • To establish or form a government, etc.
      B1TOEIC
      More
    • continuum

      US /kənˈtɪnjuəm/

      UK /kənˈtɪnjuəm/

      • Noun (Countable/Uncountable)
      • A continuation without noticeable divisions
      • A continuous sequence in which adjacent elements are not perceptibly different from each other, although the extremes are quite distinct.
      B2
      More
    • crucial

      US /ˈkruʃəl/

      UK /'kru:ʃl/

      • Adjective
      • Extremely important or necessary
      • Of great importance to the success of something.
      B1
      More
    • decay

      US /dɪˈke/

      UK /dɪˈkeɪ/

      • Intransitive Verb
      • To be slowly destroyed by natural processes; rot
      • To lose health or strength
      • Uncountable Noun
      • Slow loss of physical or mental health
      B1
      More
    • demonstrate

      US /ˈdɛmənˌstret/

      UK /'demənstreɪt/

      • Verb (Transitive/Intransitive)
      • To display a feeling or ability openly
      • To protest about something often as a group
      A2TOEIC
      More
    • depending on

      US

      UK

      • Phrasal Verb
      • To rely on for support (financial or emotional)
      • Influenced or determined by.
      • Preposition
      • Subject to; contingent on
      • Relying on someone or something for support or assistance.
      A2
      More
    • detect

      US /dɪˈtɛkt/

      UK /dɪˈtekt/

      • Transitive Verb
      • To discover or identify the presence of something
      A2TOEIC
      More
    • direction

      US /dɪˈrɛkʃən, daɪ-/

      UK /də'rekʃn/

      • Noun (Countable/Uncountable)
      • When someone tells people what to do
      • Describes the way you are going, e.g. North
      A2TOEIC
      More
    • enormous

      US /ɪˈnɔrməs/

      UK /iˈnɔ:məs/

      • Adjective
      • Huge; very big; very important
      • Very great in size, amount, or degree.
      A2
      More
    • entropy

      US /ˈɛntrəpi/

      UK /ˈentrəpi/

      • Uncountable Noun
      • Lack of order in a system
      C1
      More
    • fabric

      US /ˈfæbrɪk/

      UK /ˈfæbrɪk/

      • Noun (Countable/Uncountable)
      • Cloth or material
      • Basic structure
      B1TOEIC
      More
    • fit

      US /fɪt/

      UK /fɪt/

      • Adjective
      • Good looking; physically attractive
      • Having good physical health and strength
      • Verb (Transitive/Intransitive)
      • To install a machine, equipment etc.
      • To adjust or change to the right size or shape
      A2
      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
    • for now

      US /fɔr naʊ/

      UK /fɔ: nau/

      • Phrase
      • Temporarily; for the present time.
      • In the short term; for the immediate future.
      A1
      More
    • for someone

      US /fɚ ˈsʌmwʌn/

      UK /fə ˈsʌmwʌn/

      • other
      • On behalf of or intended for a particular person.
      A1
      More
    • for the most part

      US

      UK

      • Phrase
      • Generally; mostly; on the whole.
      • Mostly; generally; in most cases.
      A1
      More
    • forbid

      US /fərˈbɪd/

      UK /fəˈbɪd/

      • Transitive Verb
      • To order someone not to do something
      B1
      More
    • formation

      US /fɔ:rˈmeɪʃn/

      UK /fɔ:ˈmeɪʃn/

      • Noun
      • Process of creating; making a particular shape
      B1
      More
    • framework

      US /ˈfreɪmwɜ:rk/

      UK /ˈfreɪmwɜ:k/

      • Noun
      • Skeleton structure of a building or construction
      • Basic structure of something
      B1TOEIC
      More
    • fundamental

      US /ˌfʌndəˈmɛntl/

      UK /ˌfʌndəˈmentl/

      • Adjective
      • Forming a necessary part, base, or core
      • Of central importance.
      • Noun (Countable/Uncountable)
      • A basic part of something
      • (Music) the lowest note in a harmony
      A2TOEIC
      More
    • gravitational

      US /ˌɡrævɪˈteɪʃənl/

      UK /ˌgrævɪˈteɪʃənl/

      • Adjective
      • Concerning the force of gravity
      C1
      More
    • gravity

      US /ˈɡrævɪti/

      UK /ˈgrævəti/

      • Uncountable Noun
      • (Of a situation) extreme seriousness
      • Force making things fall towards the ground
      B1TOEIC
      More
    • highly unlikely

      US

      UK

      • Adjective
      • Not likely to happen or be true; improbable.
      B1
      More
    • immutable

      US /ɪˈmjutəbəl/

      UK /ɪˈmju:təbl/

      • Adjective
      • Not capable of or susceptible to change
      C1TOEIC
      More
    • in contrast to

      US /ɪn ˈkɑntræst tu/

      UK /in ˈkɔntræst tu:/

      • Phrase
      • Differing from something else
      A1
      More
    • in particular

      US /ɪn pɚˈtɪkjəlɚ/

      UK /in pəˈtikjulə/

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

      US /ɪn ði ˈfjutʃɚ/

      UK /in ðə ˈfju:tʃə/

      • Phrase
      • At a later time; in times to come.
      A1
      More
    • in the past

      US

      UK

      • Phrase
      • During a former period of time; previously.
      A1
      More
    • in the world

      US /ɪn ði wɜrld/

      UK /in ðə wɜː(r)ld/

      • Phrase
      • Used to emphasize a question expressing surprise, confusion, disbelief
      • Used to indicate the extent or degree of something, often in a superlative sense
      A1
      More
    • in time

      US /ɪn taɪm/

      UK /in taim/

      • Adverb
      • Eventually; after a period of time.
      • Not late; with enough time to spare.
      • Phrase
      • Eventually; before it is too late.
      • According to the scheduled time; punctual.
      A1
      More
    • incorporate

      US /ɪnˈkɔrpəˌret/

      UK /ɪn'kɔ:pəreɪt/

      • Transitive Verb
      • To form into a company or business corporation
      • To include or involve as part of something else
      A2
      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
    • massive

      US /ˈmæsɪv/

      UK /ˈmæsɪv/

      • Adjective
      • Very big; large; too big
      • Large or imposing in scale or scope.
      B1
      More
    • mysterious

      US /mɪˈstɪriəs/

      UK /mɪˈstɪəriəs/

      • Adjective
      • Unusual; hard to understand or work out
      A2
      More
    • no matter

      US

      UK

      • Conjunction
      • Regardless of; it does not matter.
      • Adverb
      • Regardless of; it is not important
      A1
      More
    • object

      US /ˈɑbdʒɪkt/

      UK /'ɒbdʒɪkt/

      • Noun (Countable/Uncountable)
      • Something you can see or touch, but is not alive
      • Goal or purpose of a particular plan or activity
      • Verb (Transitive/Intransitive)
      • To disagree; to protest against an idea or plan
      • To state one's reason for disagreement
      A2TOEIC
      More
    • on earth

      US /ɑn ɚθ/

      UK /ɔn ə:θ/

      • Phrase
      • Used to emphasize a question expressing surprise or anger.
      • Used to emphasize that something is not possible or will not happen.
      A1
      More
    • out there

      US /aʊt ðɛr/

      UK /aut ðɛə/

      • Adverb
      • In or to a place that is far away
      • Existing in the universe
      • Adjective
      • Unconventional; strange; avant-garde
      • Existing or available.
      A1
      More
    • over time

      US /ˈovɚ taɪm/

      UK /ˈəuvə taim/

      • Phrase
      • Gradually; as time passes.
      • During a long period.
      • Adverb
      • Gradually; as time passes.
      B1
      More
    • perpetual

      US /pərˈpetʃuəl/

      UK /pəˈpetʃuəl/

      • Adjective
      • Continuing forever
      B2TOEIC
      More
    • physicist

      US /ˈfɪzɪsɪst/

      UK /ˈfɪzɪsɪst/

      • Noun
      • Person who studies and works in physics
      B2
      More
    • proportion

      US /prəˈpɔrʃən, -ˈpor-/

      UK /prəˈpɔ:ʃn/

      • Noun (Countable/Uncountable)
      • A part of a whole thing
      • State of balance between two or more things
      • Transitive Verb
      • To balance the size of something with another
      • To adjust or adapt so that they have the correct relationship with each other.
      A2
      More
    • proposition

      US /ˌprɑ:pəˈzɪʃn/

      UK /ˌprɒpəˈzɪʃn/

      • Noun
      • General claim or theory
      • Something you want to do that may be difficult
      B1TOEIC
      More
    • psychological

      US /ˌsaɪkəˈlɑdʒɪkəl/

      UK /ˌsaɪkəˈlɒdʒɪkl/

      • Adjective
      • Concerning the study of the mind
      • Relating to or involving the use of propaganda, threats, or other psychological techniques to subdue an opponent.
      A2
      More
    • put back

      US /pʊt bæk/

      UK /put bæk/

      • Phrasal Verb
      • To return something to the proper place
      A1
      More
    • puzzle

      US /ˈpʌzəl/

      UK /'pʌzl/

      • Transitive Verb
      • To be a challenge to understand; confuse
      • Noun (Countable/Uncountable)
      • Something challenging to explain or understand
      • Game requiring the player to find an answer
      A2TOEIC
      More
    • relativity

      US /ˌrɛləˈtɪvɪti/

      UK /ˌreləˈtɪvəti/

      • Uncountable Noun
      • Einstein theory about time, space and position
      • The state of being relative; dependence on a frame of reference.
      C2
      More
    • relentlessly

      US /rɪˈlɛntlɪslɪ/

      UK /rɪ'lentləslɪ/

      • Adverb
      • Continuing without slowing or losing strength
      • In a harsh or inflexible manner; without ceasing.
      C1
      More
    • reverse

      US /rɪˈvɚs/

      UK /rɪ'vɜ:s/

      • Noun
      • Setting that makes the vehicle go backward
      • Instance of a significant change, for the worse
      • Verb (Transitive/Intransitive)
      • To drive a vehicle backward
      • To change to an opposite state, way or condition
      B1TOEIC
      More
    • set up

      US /sɛt ʌp/

      UK /set ʌp/

      • Phrasal Verb
      • To make arrangements for something; establish
      • Verb (Transitive/Intransitive)
      • To arrange or prepare something for use.
      • To start a business, organization, etc.
      A1
      More
    • shut off

      US /ʃʌt ɔf/

      UK /ʃʌt ɔf/

      • Phrasal Verb
      • To stop the movement of something, such as water
      • To isolate oneself from others.
      A2
      More
    • slow down

      US /slo daʊn/

      UK /sləu daun/

      • Phrasal Verb
      • To reduce the speed
      • To become less active or busy.
      A1
      More
    • solely

      US /ˈsolli, ˈsoli/

      UK /ˈsəʊlli:, ˈsəʊli:/

      • Adverb
      • With no one or nothing else
      B1TOEIC
      More
    • spaceship

      US /ˈspesˌʃɪp/

      UK /ˈspeɪsʃɪp/

      • Noun
      • Spacecraft designed to travel into space
      C2
      More
    • stuff

      US /stʌf/

      UK /stʌf/

      • Uncountable Noun
      • Generic description for things, materials, objects
      • Transitive Verb
      • To push material inside something, with force
      B1
      More
    • theoretically

      US /ˌθiəˈretɪkli/

      UK /ˌθɪə'retɪklɪ/

      • Adverb
      • As regards ideas that could be true
      B2
      More
    • theory

      US /ˈθiəri, ˈθɪri/

      UK /ˈθiəri/

      • Noun (Countable/Uncountable)
      • Ideas or principles that explain facts or events
      • An idea or belief about something
      A2TOEIC
      More
    • things change

      US

      UK

      • Phrase
      • Circumstances or situations do not remain constant; they evolve or transform over time.
      • An acknowledgement of the need to adapt to new realities or developments.
      A1
      More
    • think of

      US /θɪŋk ʌv/

      UK /θiŋk ɔv/

      • Phrasal Verb
      • To look on as (being something specific); consider
      • To consider or remember something.
      • Verb (Transitive/Intransitive)
      • To imagine or call something to mind
      A1
      More
    • to do with

      US

      UK

      • Phrasal Verb
      • To be about something; concern
      A1
      More
    • universe

      US /ˈjunəˌvɚs/

      UK /ˈju:nɪvɜ:s/

      • Noun (Countable/Uncountable)
      • All of space that contains planets and stars
      • Things surrounding a person, affecting their life
      B2
      More
    • violate

      US /ˈvaɪəˌlet/

      UK /ˈvaɪəleɪt/

      • Transitive Verb
      • To abuse, damage or disrespect
      • To break rules or laws; disregard important rights
      B1
      More
    • warp

      US /wɔ:rp/

      UK /wɔ:p/

      • Noun
      • Twist or bend in something normally straight
      • Transitive Verb
      • To influence someone to become bad/do evil thing
      B2
      More
    • weave

      US /wiv/

      UK /wi:v/

      • Transitive Verb
      • To make a cloth or baskets by crossing threads
      • To combine and connect ideas, stories, or themes
      • Noun
      • Particular type of cloth made by crossing threads
      B1
      More
    • with respect to

      US /wɪð rɪˈspɛkt tu/

      UK /wið risˈpekt tu:/

      • Preposition
      • In relation to; regarding.
      • Phrase
      • In relation to; concerning.
      A1
      More
    • with time

      US

      UK

      • Phrase
      • As time passes; eventually.
      • Given enough time; in the course of time.
      A1
      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
    B1US
    #einstein#relativity#theory#space time#space#arrow

    Why does time pass? | The Economist

    0
    Jeffery Xiao posted on 2018/07/15
    Ever wondered why time only seems to move forward? This fascinating video from The Economist dives into the physics behind the arrow of time, touching on everything from Einstein's theories to entropy. You'll pick up some seriously cool advanced vocabulary related to theoretical physics and the philosophy of time!

    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