| at once(noun, expression, idiom, adverb, time) |
| immediately(noun, adverb, time, first) |
| instantly(noun, adverb, time, first) |
| promptly(noun, adverb, first, directly) |
| directly(noun, adverb, time, first) |
| forthwith(adverb, time, directly, immediately) |
| straightaway(adverb, time, first, directly) |
| pronto(adverb, directly, immediately, quickly) |
| quickly(adverb, straight, away, immediately) |
| in no time(noun, expression, idiom, time, quick) |
| on the spot(expression, idiom, adverb, time, quick) |
| instanter(adverb, directly, immediately, quickly) |
| as fast as possible(expression, time, quick) |
| momentarily(expression, adverb, time, quick) |
| on the instant(expression, idiom, time, quick) |
| in a little while(expression, idiom, adverb, time, quick) |
| right now(expression, idiom, adverb, directly) |
| any minute(expression, time, quick) |
| any minute now(expression, time, quick) |
| as early as possible(expression, time, quick) |