Synonyms of fast in English:



  • 1 a fast sports car the game is played at a fast pace
    speedy, quick, swift, rapid; brisk, nimble, sprightly, lively; fast-moving, high-speed, turbo, sporty, accelerated, express, flying; whirlwind, blistering, breakneck, pell-mell, meteoric, smart; hasty, hurried; unhesitating, expeditious; fleet-footed
    informal nippy, zippy, spanking, scorching, blinding, supersonic
    British informal cracking
    literary fleet
    [Antonyms] slow
  • 2 his hand slammed against the door, holding it fast
    secure, secured, fastened, tight, firmly fixed; stuck, jammed, immovable, unbudgeable, stiff; closed, shut, to
    [Antonyms] loose
  • 3 the dyes are boiled with yarn to produce a fast colour
    indelible, lasting, permanent, stable
    [Antonyms] temporary
  • 4 they remained fast friends
    loyal, devoted, faithful, firm, steadfast, staunch, true, boon, bosom, inseparable; constant, lasting, unchanging, unwavering, enduring, unswerving
  • 5 a fast woman
    promiscuous, licentious, dissolute, impure, unchaste, wanton, abandoned, of easy virtue
    informal easy
    North American informal roundheeled
    West Indian informal slack
    derogatory sluttish, whorish, tarty, slaggy
    dated loose
    archaic light
    [Antonyms] chaste
  • 6 the fast life she led in London
    wild, dissipated, dissolute, debauched, intemperate, immoderate, louche, rakish, decadent, unrestrained, reckless, profligate, self-indulgent, shameless, sinful, immoral, extravagant
    informal swinging
    [Antonyms] sedate
  • Phrases

    fast and furious

    the fun was fast and furiousfranticwildfrenetichecticfraughtfeverishfeveredmadcrazedmanichyperactiveenergeticintenseturbulenttumultuous

    make fast

    the craft is made fast to the shoreattachfastensecurefixaffixjoinconnectcouplelinktietie upbindfetterstrapropetethertrusslashhitchmooranchoryokechain


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  • 1 she drove fast towards the gates
    quickly, rapidly, swiftly, speedily, briskly, at speed, at full speed, at full tilt; energetically; hastily, with all haste, in haste, hurriedly, in a hurry, post-haste, pell-mell; without delay, expeditiously, with dispatch, like a shot, like a flash, in a flash, in the blink of an eye, in a wink, in a trice, in no time (at all), on the double, at the speed of light, like an arrow from a bow
    North American informal lickety-split
    literary apace
    [Antonyms] slowly
  • 2 his wheels were stuck fast
  • 3 Richard's fast asleep
    deeply, sound, completely
  • Word links

    tachy- related prefix, as in tachycardia, tachygraphy

    Definition of fast in:

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    Word of the day flippant
    Pronunciation: ˈflɪp(ə)nt
    not showing a serious or respectful attitude

    Synonyms of fast in English:



  • the ministry instructed people to fast, pray, and read scripture
    abstain from food, refrain from eating, deny oneself food, go without food, go hungry, eat nothing, starve oneself; go on hunger strike
    [Antonyms] eat, indulge oneself
  • noun

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  • a five-day fast
    period of fasting, period of abstinence; hunger strike; diet
    [Antonyms] feast
  • Definition of fast in: