Synonyms of act in English:

act


See definition of act

verb

1‘the Government must act to remedy the situation’

SYNONYMS
take action, take steps, take measures, take the initiative, move, make a move, react, do something, proceed, go ahead
make progress, make headway, be active, be employed, be busy
informal get moving
ANTONYMS

do nothing

2‘over dinner Alison began to act oddly’

SYNONYMS
behave, function, react, perform
conduct oneself, acquit oneself, bear oneself
rare comport oneself, deport oneself

3‘the scents act as a powerful aphrodisiac’

SYNONYMS
operate, work, take effect, function, serve, be efficacious

4‘he acted in a highly successful film’

SYNONYMS
perform, play, play a part, take part, be an actor, be an actress, be one of the cast, appear
informal tread the boards

5‘we laughed, but most of us were just acting’

SYNONYMS
pretend, play-act, sham, fake, feign, put it on, bluff, pose, posture, masquerade, dissemble, dissimulate
informal kid

noun

1‘a life filled with acts of kindness’

SYNONYMS
deed, action, gesture, feat, exploit, move, performance, undertaking, manoeuvre, stunt, operation, venture, effort, enterprise, achievement, accomplishment

2‘the Act raised the tax on tobacco’

SYNONYMS
law, decree, statute, bill, Act of Parliament, edict, fiat, dictum, dictate, enactment, resolution, ruling, rule, judgement, canon, ordinance, proclamation, command, commandment, mandate, measure, stipulation, direction, requirement
legislation
ukase
pronunciamento

3‘I have written one act of a play’

SYNONYMS
division, section, subsection, portion, part, segment, component, bit
passage, episode, chapter

4‘a marvellous music hall act’

SYNONYMS
performance, turn, routine, number, item, piece, sketch, skit, playlet, dance, song
show, production, presentation, entertainment
informal gig

5‘my mother thinks crying is simply putting on an act’

SYNONYMS
pretence, false display, show, front, facade, masquerade, charade, guise, posture, pose, affectation, appearance
sham, fake, bluff, hoax
make-believe, play-acting, feigning, shamming, posturing, posing, counterfeit, subterfuge, dissimulation, dissemblance, fabrication, falsification
informal a put-on, a put-up job

Phrases

    act for

    ‘the estate agent was acting for a prospective buyer’


    SYNONYMS

    represent, act on behalf of, speak on behalf of

    stand in for, fill in for, deputize for, cover for, substitute for, be a substitute for, replace, take the place of, act in place of, be a locum for, do a locum for, sit in for, understudy

    hold the fort, step into the breach

    informal

    sub for, fill someone's boots, fill someone's shoes

    North American informal

    pinch-hit for

    act up

    1‘the pupils are past masters at acting up in class’


    SYNONYMS

    misbehave, give someone trouble, cause someone trouble, act badly, get up to mischief, get up to no good, be bad, be naughty, forget oneself, misconduct oneself

    clown about, clown around, fool about, fool around, act the clown, act the fool, act the goat, act foolishly

    informal

    carry on, mess about, mess around

    British informal

    muck about, muck around, play up

    2‘the computers are always acting up’


    SYNONYMS

    malfunction, crash, develop a fault, go wrong, break down, give out, stall, be defective, be faulty, fail, cease to function, cease to work, stop working

    informal

    conk out, go kaput, go phut, go on the blink, be on the blink

    British informal

    pack up, play up

    act on/upon

    1‘the drug acted directly on the blood vessels’


    SYNONYMS

    affect, have an effect on, influence, exert influence on, work on, have an impact on, impact on, alter, change, modify, transform, condition, control

    ANTONYMS

    have no effect on

    2‘he was merely acting on the orders of the party leader’


    SYNONYMS

    comply with, act in accordance with, follow, go along with

    obey, take heed of, heed, conform to, abide by, adhere to, stick to, stand by, uphold, fulfil, meet, discharge

    ANTONYMS

    flout