| instantly(noun, adverb, time, first) |
| at once(noun, expression, idiom, adverb, time) |
| directly(noun, adjective, adverb, conjunction, time) |
| promptly(noun, adjective, adverb, quick, first) |
| quickly(adverb, straight, rapidly, promptly) |
| pronto(adverb, quick, directly, quickly) |
| straightaway(adverb, time, first, directly) |
| soon(adjective, adverb, quick, first) |
| summarily(adverb, delay, first, directly) |
| shortly(adjective, adverb, quick, directly) |
| in a jiffy(noun, expression, idiom, adverb, first) |
| anon(adjective, adverb, quick, directly) |
| presto(first, directly, quickly, rapidly) |
| on the double(expression, idiom, directly, quickly) |
| before long(expression, adjective, adverb, prompt, quick) |
| before you know it(expression, idiom, adverb, shortly) |
| betimes(prompt, quick, first, timely) |
| by and by(verb, expression, idiom, adverb, phrasal verb) |
| first(adverb, directly, promptly, initially) |
| freshly(first, directly, promptly) |