- swift
- I(New American Roget's College Thesaurus)II(Roget's IV) modif.Syn. flying, sudden, speedy; see fast 1 .See Synonym Study at fast .III(Roget's 3 Superthesaurus) a.1. fast quick, rapid, speedy, hasty, fleet, express, *quicker than greased lightning, supersonic, hypersonic, faster than the speed of sound, prompt, brisk, winged, breakneck, meteoric, *on the double.2. short-lasting fleeting, brief, quick, transient, ephemeral, *passing in a heartbeat, *passing in the wink of an eye.3. quick-acting alert, *on one's toes, ready, prompt.ANT.: 1. slow, sluggish, *slower than the Second Coming. 2. long-lasting, permanent, eternal. 3. slow, *asleep, *out to lunchIV(Roget's Thesaurus II) adjective 1. Characterized by great celerity: breakneck, expeditious, fast, fleet, quick, rapid, speedy. Informal: hell-for-leather. Idiom: quick as a bunny (or wink). See FAST. 2. Accomplished in very little time: brief, expeditious, fast, flying, hasty, hurried, quick, rapid, short, speedy. See FAST.
English dictionary for students. 2013.