| straightaway |
| straightway |
| subito(highpowered, chop-chop) |
| summarily(directly, immediately, rapidly, instantly) |
| supersonic(hot, quick, rapid, nimble, speedy) |
| swift(hot, quick, rapid, speedy, hurried) |
| thereupon(directly, immediately, rapidly, instantly) |
| this instant(expression, directly, immediately, rapidly, instantly) |
| this minute(expression, directly, immediately, rapidly, instantly) |
| tout de suite(expression, idiom, directly, immediately, rapidly) |
| unhesitatingly(directly, immediately, rapidly, instantly, shortly) |
| urgently(directly, immediately, rapidly, instantly, shortly) |
| velocious(hot, quick, rapid, nimble, speedy) |
| winged(hot, quick, rapid, nimble, speedy) |
| without delay(expression, now, directly, immediately, rapidly) |
| without hesitation(expression, directly, immediately, rapidly, instantly) |
| ablaze(adjective, glistening, aglow, relucent, supersonic) |
| aboveboard(adverb, readily, promptly, unwaveringly, forthrightly) |
| apace |
| asap cousin |