| innate(adjective, characteristic, body, start, reasonable) |
| intrinsic(adjective, characteristic, close, start, natural) |
| inborn(adjective, characteristic, start, reasonable, common) |
| congenital(adjective, characteristic, start, reasonable, common) |
| essential(adjective, characteristic, body, reasonable, material) |
| inbred(adjective, characteristic, start, natural, individual) |
| constitutional(adjective, characteristic, close, body, start) |
| deep-seated(adjective, characteristic, natural, fixed, essential) |
| elemental(adjective, characteristic, body, start, material) |
| connate(adjective, characteristic, complete, natural, essential) |
| underlying(adjective, essential, basic, absolute, fundamental) |
| elementary(adjective, characteristic, essential, basic, absolute) |
| radical(adjective, essential, basic, fundamental) |
| indispensable(adjective, characteristic, essential, basic, fundamental) |
| primary(adjective, body, material, natural, animate) |
| main(adjective, essential, basic, absolute, fundamental) |
| necessary(material, natural, essential, basic) |
| absolute(adjective, definite, constant, basic, fundamental) |
| basal(adjective, body, material, natural, animate) |
| complete(adjective, definite, utter, constant, basic) |