| fleetly(adverb, immediately, quickly, soon, swiftly) |
| for a fact(expression, idiom, adverb, just, absolutely) |
| for certain(expression, adverb, just, absolutely, completely) |
| for sure |
| forthwith(adverb, directly, immediately, rapidly, instantly) |
| full tilt(expression, soon, swiftly, proximately, snappily) |
| hereupon(adverb, directly, immediately, rapidly, instantly) |
| immature(adverb, quick, immediate, proximately, beforehand) |
| immediately |
| in a New York minute(expression, adverb, directly, rapidly, instantly) |
| in a flash(expression, idiom, adverb, directly, rapidly) |
| in a jiffy(expression, adverb, directly, immediately, rapidly) |
| in every respect(expression, idiom, adverb, just, absolutely) |
| indeed(adverb, just, absolutely, completely, quite) |
| instanter(adverb, directly, immediately, rapidly, instantly) |
| just |
| lickety split(expression, soon, swiftly, proximately, snappily) |
| like a shot(expression, adverb, immediately, quickly, soon) |
| like now(expression, adverb, directly, rapidly, instantly) |
| literally |