Synonyms of instant in English:

instant


See US English definition of instant

See UK English definition of instant

See Spanish definition of instantáneo

adjective

1‘instant access to your money’

SYNONYMS
immediate, instantaneous, on-the-spot, prompt, direct, swift, speedy, rapid, quick, expeditious, express, lightning, sudden, precipitate, abrupt
informal snappy, p.d.q., pretty damn quick
literary fleet, rathe
rare alacritous
ANTONYMS

delayed, long-term

2‘the additives in instant meals’

SYNONYMS
pre-prepared, ready prepared, ready mixed, pre-cooked, fast, easy to prepare, quick to prepare, easy to make, quick to make, microwaveable, convenience, TV

noun

1‘there'll never be an instant quite like this again’

SYNONYMS
moment, time, point in time, moment in time, minute, second, hour
stage, phase, juncture, point

2‘it all happened in an instant’

SYNONYMS
short time, little while, bit, moment, minute, second, split second, trice, twinkling, twinkling of an eye, flash, no time, less than no time, no time at all
informal sec, nanosecond, jiffy, jiff, two shakes of a lamb's tail, the blink of an eye
British informal mo, two ticks
North American informal snap
ANTONYMS

eternity


Phrases

    on the instant


    SYNONYMS
    immediately, instantly, at once, straight away, right away, instantaneously, suddenly, abruptly, all of a sudden, at a stroke, forthwith, then and there, there and then, here and now, that minute, this minute, that very minute, this very minute, that instant, this instant
    quickly, rapidly, swiftly, speedily, directly, without delay, promptly
    in an instant, in a moment, in a second, in a split second, in a minute, in a trice, in a fraction of a second, in a flash, like a flash, quick as lightning, like a shot, in a wink, in the blink of an eye, in the twinkling of an eye, in two shakes, in two shakes of a lamb's tail, in no time, in less than no time, before you know it, on the double, at the speed of light, like an arrow from a bow
    tout de suite
    informal in a jiffy, pronto, before you can say Jack Robinson, double quick, in double quick time, p.d.q., pretty damn quick, like lightning, like greased lightning, toot sweet
    Indian informal ekdam
    archaic straightway, instanter, forthright
    ANTONYMS

    eventually, slowly