Synonyms for rapid
modified
Swift
fast, speedy, accelerated, hurried; see fast 1.
Quick
nimble, light-footed, fleet, mercurial, brisk, expeditious, winged, lively, ready, prompt, spry; see also active 2, agile.
Antonyms listless*, sluggish, languid. See syn. study at fast.fast.
See rapid in Webster's New World Roget's A-Z Thesaurus II
adjective
Characterized by great celerity:
breakneck, expeditious, fast, fleet, quick, speedy, swift. (Informal) hell-for-leather. Idiom: quick as a bunny (or wink). See fastAccomplished in very little time:
brief, expeditious, fast, flying, hasty, hurried, quick, short, speedy, swift. See fast
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