| hypersonic(hot, quick, rapid, nimble, speedy) |
| immediate(fast, quick, rapid, speedy, swift) |
| impatient(fast, rapid, swift) |
| impetuous(fast, rapid, swift) |
| in a jiffy(expression, idiom, hot, quick, nimble) |
| instantaneous(fast, rapid, swift) |
| keen(fast, rapid, swift) |
| lead out(expression, fast, rapid, swift) |
| lickety split(expression, hot, quick, nimble, speedy) |
| like a bat out of hell(expression, idiom, hot, quick, nimble) |
| like all get out(expression, idiom, hot, quick, nimble) |
| like crazy(expression, hot, quick, showy, nimble) |
| like mad(expression, hot, quick, showy, nimble) |
| lively(fast, quick, rapid, speedy, brisk) |
| mercurial(fast, quick, rapid, speedy, brisk) |
| move it(expression, fast, rapid, swift) |
| move on(expression, fast, rapid, swift) |
| perfunctory(fast, rapid, swift) |
| presto(hot, quick, rapid, nimble, speedy) |
| prompt(fast, quick, rapid, speedy, brisk) |