| supporting(adjective, important, significant, original, essential) |
| sustaining(adjective, important, significant, original, essential) |
| theoretical(adjective, important, significant, original, essential) |
| underivative(adjective, simple, basic, authentic, unsophisticated) |
| underlying(adjective, rough, important, significant, original) |
| vital(adjective, important, significant, original, essential) |
| aboriginal(adjective, authentic, first, previous, initial) |
| archetypal(adjective, authentic, first, previous, initial) |
| authored(inchoate, originating) |
| autochthonous(adjective, authentic, first, previous, initial) |
| bottom line(expression, important, significant, essential, basic) |
| commencing(adjective, authentic, first, previous, initial) |
| deep(original, basic, primary) |
| deep-seated(original, basic, primary) |
| genuine(adjective, authentic, first, previous, initial) |
| grassroots(adjective, important, significant, essential, basic) |
| incepted(inchoate, originating) |
| inchoate |
| inductive(inchoate, originating) |
| ingenious |