| advanced |
| antecedent(adjective, head, beginning, opening, original) |
| anterior(adjective, head, beginning, original, prime) |
| antiquated(adjective, last, original, old, venerable) |
| antique(adjective, last, original, old, venerable) |
| before |
| immature(adjective, adverb, simple, quick, basic) |
| immemorial(adjective, last, original, primitive, venerable) |
| in time(adverb, time, timely, opportunely) |
| infant(adjective, beginning, opening, original, authentic) |
| initially |
| inopportune(adjective, unwarranted, premature) |
| introductory(adjective, simple, head, beginning, opening) |
| other(adjective, last, previous) |
| pioneer(adjective, head, beginning, opening, original) |
| precociously |
| preexistent(adjective, adverb, quick, unanticipated, untimely) |
| previously(adjective, adverb, first, forward, earlier) |
| prime(adjective, head, beginning, opening, original) |
| prior(adjective, late, old, past, first) |