| innate(adjective, characteristic, start, reasonable, physical) |
| inherent(adjective, characteristic, start, reasonable, common) |
| congenital(adjective, characteristic, start, reasonable, common) |
| ingrained(adjective, characteristic, start, natural, individual) |
| intrinsic(adjective, characteristic, start, natural, fixed) |
| natural(adjective, characteristic, start, physical, ordinary) |
| native(adjective, characteristic, start, reasonable, common) |
| inbred(adjective, characteristic, start, natural, individual) |
| hereditary(adjective, natural, fixed, be, native) |
| essential(adjective, characteristic, reasonable, common, ordinary) |
| instinctual(adjective, physical, natural, primitive, spontaneous) |
| intuitive(adjective, characteristic, reasonable, physical, common) |
| constitutional(adjective, characteristic, start, natural, fixed) |
| inherited(adjective, characteristic, complete, natural, be) |
| indwelling(adjective, characteristic, start, natural, fixed) |
| intuitional(adjective, inside, instinctive, interior, automatic) |
| visceral(adjective, physical, natural, secret, private) |
| accustomed(adjective, inside, instinctive, interior, automatic) |
| connatural(adjective, start, complete, reasonable, ordinary) |
| deep-seated(adjective, characteristic, natural, fixed, persistent) |