| directly(adverb, fast, quickly, pronto) |
| double-quick(adjective, adverb, quick, hastily, impulsively) |
| fleetly(adverb, quick, early, quickly, hastily) |
| instantly(adverb, early, directly, immediately, quickly) |
| presto(adjective, adverb, quickly, speedily) |
| quick(early, quickly, instantly, speedily) |
| suddenly(adjective, adverb, hastily, unexpectedly, impulsively) |
| at once(expression, adverb, directly, immediately, quickly) |
| like greased lightning(expression, idiom, adverb, quickly, speedily) |
| in a flash(expression, idiom, adverb, directly, immediately) |
| in a trice(expression, idiom, adverb) |
| right away(expression, adverb, directly, immediately, instantly) |
| swift(quickly, speedily) |
| without delay(expression, adverb, directly, immediately, quickly) |
| excitedly(intensely, fiercely, hastily, wildly, impulsively) |
| in a jiffy(expression, idiom, adverb, directly, immediately) |
| in a wink(expression, idiom, adverb) |
| like mad(expression, adverb, intensely, fiercely, wildly) |
| nimbly(adverb, swiftly) |
| post-haste |