| basal(adjective, simple, plain, important, significant) |
| basic(adjective, simple, plain, important, significant) |
| elemental(adjective, simple, plain, important, significant) |
| elementary(adjective, simple, plain, important, significant) |
| essential(adjective, simple, plain, important, significant) |
| fundamental(adjective, clear, simple, plain, important) |
| intrinsic(adjective, important, significant, original, essential) |
| primitive(adjective, simple, plain, important, significant) |
| underlying(adjective, simple, plain, important, significant) |
| primary(adjective, simple, plain, important, significant) |
| cardinal(adjective, important, significant, original, essential) |
| central(adjective, important, significant, original, essential) |
| cold(adjective, basic, absolute, fundamental) |
| complete(adjective, basic, absolute, fundamental) |
| congenital(adjective, basic, absolute, fundamental) |
| connate(adjective, basic, absolute, fundamental) |
| constitutional(adjective, important, significant, original, essential) |
| deep-seated(adjective, original, essential, basic, absolute) |
| ideal(adjective, basic, absolute, fundamental) |
| inborn(adjective, basic, absolute, fundamental) |