| soon(adjective, adverb, prompt, quick, unwarranted) |
| timely(adverb, time, opportunely) |
| antediluvian(adjective, start, original, old, venerable) |
| beforehand(adjective, adverb, time, prompt, intelligent) |
| primal(adjective, beginning, primary, primeval) |
| too soon(expression, adjective, idiom, adverb, prompt) |
| embryonic(adjective, simple, beginning, opening, original) |
| foregoing(adjective, late, old, past, previous) |
| aboriginal(adjective, head, beginning, last, original) |
| ahead(adjective, adverb, time, head, beginning) |
| earliest(adjective, simple, clean, perfect, natural) |
| erstwhile(adjective, last, original, late, old) |
| in advance(expression, adjective, idiom, adverb, time) |
| olden(adjective, original, late, old, past) |
| past(adjective, last, original, old, primitive) |
| preceding(adjective, adverb, quick, late, old) |
| prehistoric(adjective, before) |
| previous(adjective, adverb, last, quick, prime) |
| recent(adjective, new, inferior, little, late) |
| advance(adjective, time, first, forward, ahead) |