| instinctive(adjective, characteristic, reasonable, physical, common) |
| internal(adjective, characteristic, natural, heart, emotional) |
| intimate(adjective, characteristic, natural, heart, emotional) |
| involuntary(adjective, natural, instinctive, gut, automatic) |
| spontaneous(adjective, natural, instinctive, gut, automatic) |
| unlearned(adjective, natural, instinctive, untrained, automatic) |
| viscerous(adjective, heart, emotional, secret, private) |
| gut(adjective, heart, emotional, secret, private) |
| emotional(adjective, private, mental, instinctive, gut) |
| intuitional(adjective, inside, instinctive, interior, automatic) |
| normal(adjective, characteristic, reasonable, common, ordinary) |
| accustomed(adjective, inside, instinctive, interior, automatic) |
| automatic(adjective, inside, instinctive, interior, intuitive) |
| elemental(adjective, characteristic, body, start, material) |
| knee-jerk(adjective, inside, instinctive, interior, automatic) |
| rooted(adjective, inside, instinctive, interior, automatic) |
| second-nature(adjective, inside, instinctive, interior, automatic) |
| indwelling(adjective, characteristic, start, natural, fixed) |
| inner(adjective, characteristic, natural, private, mental) |
| inward(adjective, individual, private, mental, inner) |