| speedily(adverb, quick, early, quickly, earnestly) |
| quickly(adverb, immediately, rapidly, soon, hastily) |
| swiftly(adverb, directly, immediately, quickly, rapidly) |
| promptly(adverb, quick, early, directly, quickly) |
| fast(adjective, adverb, early, immediately, quickly) |
| hastily(adverb, quick, early, quickly, earnestly) |
| immediately(adverb, directly, quickly, rapidly, instantly) |
| rapidly(adverb, quick, early, directly, immediately) |
| briskly(adverb, vigorously, quickly, earnestly, rapidly) |
| instantly(adverb, punctually) |
| lickety-split |
| agilely(vigorously, earnestly, actively, hastily, carefully) |
| efficiently |
| hurriedly(adverb, quick, quickly, earnestly, rapidly) |
| nimbly(adverb, vigorously, earnestly, actively, hastily) |
| punctually(adverb, punctually) |
| soon(adverb, directly, immediately, quickly, rapidly) |
| apace(adverb, quick, quickly, rapidly, hastily) |
| at once(expression, adverb, directly, immediately, quickly) |
| forthwith(adverb, punctually) |