| elemental(adjective, important, significant, original, essential) |
| initial(adjective, start, head, beginning, fresh) |
| Aboriginal |
| antique(adjective, last, original, old, venerable) |
| germinal(adjective, cause, beginning) |
| radical(adjective, cause, important, significant, original) |
| antiquated(adjective, last, original, old, venerable) |
| archaic(adjective, original, old, venerable, outdated) |
| central(adjective, important, significant, original, essential) |
| elementary(adjective, important, head, significant, beginning) |
| former(adjective, last, original, past, primitive) |
| primaeval |
| rudimentary(adjective, important, head, significant, beginning) |
| cardinal(noun, adjective, important, head, significant) |
| inaugural(adjective, head, beginning, opening, original) |
| introductory(adjective, head, beginning, original, prime) |
| key(adjective, important, head, significant, beginning) |
| patriarchal |
| ancestral |
| autochthonous(original, first, previous, initial, indigenous) |