| inbred(adjective, intrinsicality) |
| incipient(adjective, head, beginning, opening, original) |
| innate(adjective, material, natural, fixed, basic) |
| integrated(adjective, simple, whole, united) |
| nascent(adjective, start, pure, beginning, opening) |
| needful(adjective, important, significant, original, capital) |
| nitty-gritty(noun, adjective, part, important, essential) |
| postulate(noun, verb, law, support, regulation) |
| prerequisite(noun, adjective, important, need, significant) |
| primeval(adjective, harsh, violent, head, beginning) |
| principium(noun, law, regulation, part, rule) |
| real(adjective, important) |
| rock bottom(noun, expression, part, cause, quick) |
| root(noun, adjective, support, action, drop) |
| rooted |
| rudimental(adjective, first, previous, elementary, initial) |
| solid(adjective, simple, whole, united) |
| supporting(adjective, support, important, original, basic) |
| uncluttered(adjective, pure) |
| abecedarian(adjective, simple, straightforward, basic, uncomplicated) |