| Main Entry: | fast |
| Part of Speech: | adjective |
| Definition: | speedy |
Synonyms: |
PDQ, accelerated, active, agile, blue streak, breakneck, brisk, chop-chop, dashing, double-time, electric, expeditious, expeditive, flashing, fleet, fleeting, flying, hairtrigger, hasty, hot, hurried, hypersonic, in a jiffy, in nothing flat, lickety split, like a bat out of hell, like all get out, like crazy, like mad, nimble, on the double, posthaste, presto, pronto, quick, racing, rapid, ready, screamin', snap*, snappy, speedball, supersonic, swift, velocious, winged |
Antonyms: |
plodding, slow, tardy, unhurried |
| Main Entry: | immediately |
| Part of Speech: | adverb |
| Definition: | at once, right away |
Synonyms: |
PDQ, anon, at short notice, away, directly, double-time, forthwith, hereupon, in a New York minute, in a flash, in a jiffy, in nothing flat, instantaneously, instanter, instantly, like now, now, now or never, on the dot, on the double, on the spot, promptly, pronto, rapidly, right now, shortly, soon, soon afterward, straight away, straight off, summarily, thereupon, this instant, this minute, tout de suite, unhesitatingly, urgently, without delay, without hesitation |
Antonyms: |
eventually, later, never |
| Main Entry: | instantly |
| Part of Speech: | adverb |
| Definition: | right now |
Synonyms: |
PDQ, at once, away, directly, double-time, first off, forthwith, immediately, in a flash, instantaneously, instanter, now, on a dime, pronto, right, right away, spontaneously, straight away, there and then, this minute, tout de suite, without delay |
| Notes: | simultaneously means happening or existing at the same time; instantaneously means done without any delay; instantly means done at once |
Antonyms: |
eventually, later |
| Main Entry: | on the double |
| Part of Speech: | adverb |
| Definition: | very quickly |
Synonyms: |
chop chop, chop-chop, double-time, expeditiously, fast, flat-out, fleetly, full tilt, hastily, hurried, hurriedly, in a flash, in double time, in haste, in high gear, lickety-split, lickety-split, like a shot, like greased lightning, like wildfire, promptly, pronto, quick, quickly, rapidly, snappily, speedily, swift, swiftly |
| Main Entry: | hell-for-leather |
| Part of Speech: | adjective |
| Definition: | fast |
Synonyms: |
accelerated, active, agile, blue streak, breakneck, brisk, bunny, chop-chop, dashing, double-time, electric, expeditious, expeditive, flashing, fleet, fleeting, flying, hairtrigger, hasty, hot*, hurried, hypersonic, in a jiffy, in nothing flat, lick |