| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | quick in movement |
| Synonyms: | agile, barreling, breakneck, brisk, expeditious, expeditive, fast, flying, hasty, in nothing flat, like greased lightning, lively, mercurial, meteoric, nimble, nimble-footed, on the double, rapid, screaming, speedball, speedy, swift, winged |
| Antonyms: | clumsy, slow |