| unfinished(adjective, simple, natural, crude, deficient) |
| basal(adjective, start, simple, plain, important) |
| incomplete(adjective, hard, inadequate, raw, deficient) |
| introductory(adjective, simple, plain, head, beginning) |
| inchoate(adjective, beginning, undeveloped) |
| primal |
| primordial(adjective, important, head, significant, beginning) |
| rude(adjective, crude, primitive) |
| abecedarian(adjective, simple, straightforward, basic, fundamental) |
| cardinal(noun, adjective, important, head, significant) |
| original(adjective, simple, plain, important, head) |
| principal(adjective, important, significant, original, essential) |
| simple(adjective, natural, straightforward, crude, basic) |
| underdeveloped(adjective, simple, crude, naive, hidden) |
| unpolished |
| unprocessed(adjective, hard, simple, coarse, natural) |
| central(adjective, important, significant, original, essential) |
| initiatory |
| key(adjective, important, head, significant, beginning) |
| prime(adjective, important, head, significant, beginning) |