| without delay(expression, adverb, directly, immediately, rapidly) |
| PDQ(directly, immediately, rapidly, instantly, shortly) |
| at short notice(expression, idiom, directly, rapidly, instantly) |
| away(directly, immediately, rapidly, instantly) |
| contiguously(adverb, directly) |
| dead(adverb, informal, directly) |
| double-time(directly, immediately, rapidly, instantly, shortly) |
| due(adverb, directly) |
| hereupon(directly, immediately, rapidly, instantly, shortly) |
| in a New York minute(expression, idiom, directly, rapidly, instantly) |
| in a flash(expression, idiom, directly, rapidly, instantly) |
| in a jiffy(expression, idiom, directly, immediately, rapidly) |
| in a second(adverb, directly) |
| in nothing flat(expression, idiom, directly, rapidly, instantly) |
| in real time |
| instantaneously(adverb, straight, directly, immediately, quickly) |
| like now(expression, directly, immediately, rapidly, instantly) |
| now or never(expression, idiom, directly, rapidly, instantly) |
| on the dot(expression, idiom, directly, rapidly, instantly) |
| on the double(expression, idiom, directly, rapidly, instantly) |