accelerate
US /ækˈsɛləˌret/
UK /əkˈseləreɪt/
- Transitive Verb
- To cause to occur earlier than expected
- To increase the speed or rate of something
B1TOEICMoreadditional
US /ə'dɪʃənl/
UK /əˈdɪʃənl/
- Adjective
- Further or added
- Extra to what already exists
A2TOEICMorealong with
US /əˈlɔŋ wɪð/
UK /əˈlɔŋ wið/
- Preposition
- In addition to; together with.
- Adverb
- In company or together with someone or something.
- Including; in addition to.
A2Morearrow
US /ˈæroʊ/
UK /ˈærəʊ/
- Noun
- Symbol used on road signs to show direction
- A long pointed piece of wood shot from a bow
B1Morecircular
US /ˈsɜ:rkjələ(r)/
UK /ˈsɜ:kjələ(r)/
- Adjective
- Shaped like a circle or part of a circle
- Noun
- Paper with news, ads, etc. sent round to people
B2Morecome back
US /kʌm bæk/
UK /kʌm bæk/
- Phrasal Verb
- To reply to someone, often forcefully
- To be remembered
A1Morecomplicate
US /ˈkɑ:mplɪkeɪt/
UK /ˈkɒmplɪkeɪt/
- Transitive Verb
- To make more difficult to do, understand or use
B1Moreconstant
US /ˈkɑnstənt/
UK /'kɒnstənt/
- Adjective
- Happening frequently or without pause
- Remaining the same over time or not changing.
- Noun
- Thing that happens always or at a regular rate
- A physical quantity that is believed to have a fixed value and is used in calculations.
A2TOEICMorecontinuously
US /kənˈtɪnjʊəslɪ/
UK /kən'tɪnjʊəslɪ/
- Adverb
- Without stops, breaks, or an end
- Without interruption; constantly.
B1Morecurve
US /kɚv/
UK /kə:v/
- Noun (Countable/Uncountable)
- Smooth rounded line that is not straight
- A distribution of statistical data represented graphically.
- Transitive Verb
- To make something bend into a rounded shape
A2Moredeal with
US /dil wɪð/
UK /di:l wið/
- Verb (Transitive/Intransitive)
- To buy or sell goods or services.
- Phrasal Verb
- To take action to solve a problem or manage a situation.
- To be about; concern.
A1Moredirect
US /dɪˈrɛkt, daɪ-/
UK /də'rekt/
- Transitive Verb
- To tell someone in a very clear way to do something
- To show the way by conducting or leading
- Adverb
- Coming straight from something
A2TOEICMoredirection
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
A2TOEICMoredownward
US /ˈdaʊnwərd/
UK /ˈdaʊnwəd/
- Adjective
- Moving from a higher to a lower condition/place
B1TOEICMoredue to
US /du tu/
UK /dju: tu:/
- Preposition
- Because of; owing to
- Adjective
- Attributable to; caused by.
A1Morefigure 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.
A1Morefloat
US /floʊt/
UK /fləʊt/
- Verb (Transitive/Intransitive)
- To sell the shares of a company publicly
- To move slowly and easily through air
- Noun (Countable/Uncountable)
- Object designed to stay on the surface of water
- Decorated truck used in a festival
B1Morefor example
US
UK
- Phrase
- As an illustration or instance.
force in
US /fɔrs ɪn/
UK /fɔ:rs ɪn/
- other
- To enter a place by applying physical force.
B2Morefriction
US /ˈfrɪkʃən/
UK /ˈfrɪkʃn/
- Uncountable Noun
- Disagreement between two or more people
- Force preventing motion between bodies in contact
B2Moreget back to
US /ɡɛt bæk tu/
UK /ɡet bæk tu:/
- Phrasal Verb
- To get in contact with someone again
- To return to someone or something; to respond at a later time.
A1Morego straight
US /ɡo stret/
UK /ɡəu streit/
- Intransitive Verb
- To continue in the same direction without turning.
- To start living an honest and law-abiding life.
A1Moregoing on
US /ˈɡoɪŋ ɑn/
UK /ˈgəʊɪŋ ɔn/
- Phrasal Verb
- To continue doing something
- To happen (usually negative)
A1Moregravity
US /ˈɡrævɪti/
UK /ˈgrævəti/
- Uncountable Noun
- (Of a situation) extreme seriousness
- Force making things fall towards the ground
B1TOEICMorehave a ball
US
UK
- Intransitive Verb
- To enjoy oneself very much; have a good time.
A1Morehave to
US /hæv tu/
UK /ˈhæv tə/
- Auxiliary Verb
- Must do
A1Morein 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.
C1Morein general
US /ɪn ˈdʒɛnərəl/
UK /in ˈdʒenərəl/
- Phrase
- Typically; usually; on the whole.
- Not specific or detailed; broadly.
- Adjective
- Not detailed or specific; overall.
C2Morein motion
US /ɪn ˈmoʃən/
UK /in ˈməuʃən/
- Phrase
- Moving; not stationary.
C2Moreinertia
US /ɪˈnɚʃə/
UK /ɪˈnɜ:ʃə/
- Uncountable Noun
- Lack of movement or activity
- The tendency of an object to resist changes in its state of motion.
C1Moreinstinct
US /ˈɪnˌstɪŋkt/
UK /'ɪnstɪŋkt/
- Noun
- Natural way of thinking; intuition
- Natural way (person or animal) thinks, behaves
B1Moreintuitively
US /ɪnˈtjuɪtɪvlɪ/
UK /ɪn'tju:ɪtɪvlɪ/
- Adverb
- In a manner based on feelings rather than facts
B2Moreinvestigate
US /ɪnˈvɛstɪˌɡet/
UK /ɪn'vestɪɡeɪt/
- Verb (Transitive/Intransitive)
- To try to find out facts; to carry out research
A2Morelook at
US /lʊk æt/
UK /luk æt/
- Phrasal Verb
- To use your eyes to focus on something
- To focus your eyes on something carefully
A1Moremagnitude
US /ˈmæɡnɪˌtud, -ˌtjud/
UK /ˈmægnɪtju:d/
- Noun
- Number representing force of an earthquake
- Size or importance
B2Moremotion
US /ˈmoʃən/
UK /'məʊʃn/
- Noun (Countable/Uncountable)
- Suggestion at a meeting
- A movement; the process of moving
- Intransitive Verb
- To communicate by moving your head or hand
A2Moreof course
US /ʌv kɔː(r)s/
UK /ɔv kɔː(r)s/
- Adverb
- Sure ; Certainly
- Phrase
- For sure; certainly
A2Moreoutward
US /ˈaʊtwəd/
UK /ˈaʊtwəd/
- Adjective
- Going away from a place that will be returned to
- Seeming to be from the outside
B1Morepath
US /pæθ, pɑθ/
UK /pɑ:θ/
- Noun
- Method of living leading to a particular result
- Track made with stones, by walking over the ground
A2TOEICMoreperpendicular
US /ˌpə:pənˈdɪkjəlɚ/
UK /ˌpɜ:pənˈdɪkjələ(r)/
- Adjective
- Being at right angles to a given line or plane
- In a straight up and down direction; vertical.
- Noun
- A line at right angles to a given line, plane, or surface.
C1Morerandom
US /ˈrændəm/
UK /'rændəm/
- Adjective
- Chosen, done without a particular plan or pattern
B1Morerate as
US
UK
- Phrasal Verb
- To consider someone or something to be of a particular quality or standard.
B1Moresatellite
US /ˈsætlˌaɪt/
UK /'sætəlaɪt/
- Noun (Countable/Uncountable)
- Device sent into space that aids communication
- Natural object in space that moves around another
B1Moresimilarly
US /ˈsɪmələrli/
UK /ˈsɪmələli/
- Adverb
- In a way almost the same as something else
A2Moreslightly
US /ˈslaɪtli/
UK /ˈslaɪtli/
- Adverb
- Only a little
B1Moreslippery
US /ˈslɪpəri/
UK /ˈslɪpəri/
- Adjective
- Difficult to hold or stand as it's smooth/wet/icy
- Hard to pin down; avoiding telling facts; evasive
B1Moreslow down
US /slo daʊn/
UK /sləu daun/
- Phrasal Verb
- To reduce the speed
- To become less active or busy.
A1Morespeed
US /spid/
UK /spi:d/
- Uncountable Noun
- How fast or slow something is or is done
- Verb (Transitive/Intransitive)
- To move quickly when completing an action
- To drive a vehicle faster than laws allow
A2TOEICMorespeed up
US /spid ʌp/
UK /spi:d ʌp/
- Phrasal Verb
- To move more quickly
A2Morespin
US /spɪn/
UK /spɪn/
- Verb (Transitive/Intransitive)
- To make a ball rotate when throwing it
- To move something in a rapid turning motion
- Intransitive Verb
- To feel dizzy/confused, as in my head is spinning
B1Morestay in
US /ste ɪn/
UK /stei in/
- Phrasal Verb
- To remain inside one's home.
- Intransitive Verb
- To remain as an inpatient in a hospital.
straight
US /stret/
UK /streɪt/
- Adjective
- Not having curves, bends, or angles
- Not gay; heterosexual
- Adverb
- in a line; immediately; honestly and directly
- In a straight line; directly.
A2TOEICMorestring
US /strɪŋ/
UK /strɪŋ/
- Transitive Verb
- To tie or connect things together with a thread
- Noun (Countable/Uncountable)
- A line of connected objects
- Thick thread; thin rope
A2Moresuppose
US /səˈpoʊz/
UK /sə'pəʊz/
- Verb (Transitive/Intransitive)
- To imagine or guess what might happen
- Conjunction
- What if
A2TOEICMoretangent
US /ˈtændʒənt/
UK /ˈtændʒənt/
- Noun
- Line or curve meeting another line or curve
- In trigonometry, the ratio of the length of the side opposite the acute angle to the length of the adjacent side in a right-angled triangle.
- Adjective
- Line of thought that is not related
C1Moretangential
US /tænˈdʒɛnʃəl/
UK /tænˈdʒenʃl/
- Adjective
- Line of thought that is not related
C1TOEICMoretend
US /tɛnd/
UK /tend/
- Intransitive Verb
- To move or act in a certain manner
- Transitive Verb
- To take care of
A2Moretendency
US /ˈtɛndənsi/
UK /'tendənsɪ/
- Noun
- Likelihood to behave in a particular way
A2Morethink about
US /θɪŋk əˈbaʊt/
UK /θiŋk əˈbaut/
- Phrasal Verb
- To consider something carefully.
- To remember or call to mind.
A1Morethink 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
A1Morethrust
US /θrʌst/
UK /θrʌst/
- Transitive Verb
- To move (e.g. a knife) forcefully towards someone
- To push someone or something with great strength
- Noun (Countable/Uncountable)
- Movement of (e.g. a knife) towards someone
- Primary purpose or meaning of something
B2Moretilt
US /tɪlt/
UK /tɪlt/
- Verb (Transitive/Intransitive)
- To change to a newly preferred idea or opinion
- To move something away from the upright
- Noun
- Position in which one side is above the other
B2Moreto the left
US
UK
- Phrase
- In or toward the left direction.
- Situated on the left side of.
toolbox
US /ˈtulˌbɑks/
UK /ˈtu:lbɒks/
- Noun
- Box, chest or cabinet for holding hand tools
C2Moreused up
US
UK
- Phrasal Verb
- To use all of; consume
- Adjective
- Exhausted or depleted.
A1Morevector
US /ˈvɛktɚ/
UK /'vektə(r)/
- Noun
- Math a quantity that has both size and direction
B2Morevelocity
US /vəˈlɑsɪti/
UK /və'lɒsətɪ/
- Noun (Countable/Uncountable)
- Speed in a given direction
- The rate of change of an object's position with respect to time; a vector quantity.
B1More
Vocabulary
- look at: To use your eyes to focus on something
- for example: As an illustration or instance.
- go straight: To continue in the same direction without turning.
- of course: Sure ; Certainly
- going on: To continue doing something
- come back: To reply to someone, often forcefully
- think about: To consider something carefully.
- in general: Typically; usually; on the whole.
- slow down: To reduce the speed
- to the left: In or toward the left direction.
- along with: In addition to; together with.
- in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
- have a ball: To enjoy oneself very much; have a good time.
- rate as: To consider someone or something to be of a particular quality or standard.
- have to: Must do
- force in: To enter a place by applying physical force.
- speed up: To move more quickly
- think of: To look on as (being something specific); consider
- stay in: To remain inside one's home.
- in motion: Moving; not stationary.
- figure out: To understand the behavior of someone
- due to: Because of; owing to
- get back to: To get in contact with someone again
- used up: To use all of; consume
- deal with
- instinct: Natural way of thinking; intuition
- constant: Happening frequently or without pause
- slightly: Only a little
- straight: Not having curves, bends, or angles
- completely: In every way or as much as possible
- tend: To move or act in a certain manner
- force: Group of persons trained for military action; army
- general: Widespread, normal or usual
- random: Chosen, done without a particular plan or pattern
- imagine: To think creatively about; form mental picture of
- suppose: To imagine or guess what might happen
- tendency: Likelihood to behave in a particular way
- bit: Device put in a horse's mouth to control it
- gravity: (Of a situation) extreme seriousness
- similar: Nearly the same; alike
- direct: To tell someone in a very clear way to do something
- path: Method of living leading to a particular result
- direction: When someone tells people what to do
- effect: An advantage, benefit
- spin: To make a ball rotate when throwing it
- throw: To use your arm to make something fly in the air
- rate: To assess something or consider its qualities
- break: To create a new record e.g. running the 100m dash
- provide: To make available; to supply for use
- ground: To break (coffee, etc.) into tiny bits with machine
- string: To tie or connect things together with a thread
- accelerate: To cause to occur earlier than expected
- magnitude: Number representing force of an earthquake
- fall: Season after summer and before winter; Autumn
- leave: To go away from; depart
- tilt: To change to a newly preferred idea or opinion
- inertia: Lack of movement or activity
- investigate: To try to find out facts; to carry out research
- satellite: Device sent into space that aids communication
- curve: Smooth rounded line that is not straight
- velocity: Speed in a given direction
- complicate: To make more difficult to do, understand or use
- additional: Further or added
- friction: Disagreement between two or more people
- important: Having power or authority
- intuitively: In a manner based on feelings rather than facts
- thrust: To move (e.g. a knife) forcefully towards someone
- motion: Suggestion at a meeting
- slippery: Difficult to hold or stand as it's smooth/wet/icy
- float: To sell the shares of a company publicly
- continuously: Without stops, breaks, or an end
- arrow: Symbol used on road signs to show direction
- downward: Moving from a higher to a lower condition/place
- outward: Going away from a place that will be returned to
- perpendicular: Being at right angles to a given line or plane
- speed: How fast or slow something is or is done
- similarly: In a way almost the same as something else
- circular: Shaped like a circle or part of a circle
- tangent: Line or curve meeting another line or curve
- vector: Math a quantity that has both size and direction
- tangential: Line of thought that is not related
- toolbox: Box, chest or cabinet for holding hand tools
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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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80
Centripetal force | Physics | Khan Academy
0
Jasmine Chen cc posted on 2026/07/06Ever wondered why astronauts float in space? This video dives into the fascinating physics behind weightlessness, explaining how objects in orbit are actually in a constant state of freefall! You'll also explore the concept of centripetal force with relatable examples, like a car turning a corner, and pick up key physics vocabulary along the way.
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