| briefly(adverb, conciseness, earliness, concisely) |
| immediately(adverb, delay, first, now, directly) |
| promptly(adverb, delay, first, directly, immediately) |
| shortly(adverb, directly, immediately, rapidly, instantly) |
| concisely(adverb, shortly, conciseness, briefly) |
| speedily(adverb, delay, earliness) |
| at once(expression, idiom, adverb, first, directly) |
| directly(adverb, first, now, immediately, rapidly) |
| forthwith(adverb, delay, directly, immediately, rapidly) |
| succinctly(adverb, shortly, briefly, concisely) |
| without delay(expression, idiom, adverb, first, directly) |
| curtly |
| instantly(adverb, first, now, directly, immediately) |
| laconically |
| straight(adverb, earliness) |
| apace |
| compendiously |
| in summary(adverb, outline, summation, brevity) |
| on the spot(expression, idiom, adverb, delay, directly) |
| quickly(adverb, earliness) |