| intramural(adjective, inside, interior, inner, internal) |
| involuntary(adjective, natural, instinctive, automatic, reflex) |
| mechanical(adjective, natural, instinctive, automatic, inherent) |
| peculiar(adjective, characteristic, exact, certain, special) |
| private(adjective, special, individual, heart, secret) |
| radical(adjective, important, significant, original, essential) |
| regular(adjective, characteristic, natural, instinctive, automatic) |
| spontaneous(adjective, natural, instinctive, automatic, involuntary) |
| typical(adjective, natural, special, instinctive, automatic) |
| unalienable |
| unlearned(adjective, natural, instinctive, automatic, inherent) |
| unmeditated(adjective, natural, instinctive, automatic, involuntary) |
| unpremeditated(adjective, natural, instinctive, automatic, involuntary) |
| unprompted(adjective, natural, instinctive, automatic, inherent) |
| unthinking(adjective, natural, instinctive, automatic, inherent) |
| concealed(adjective, individual, basic, fundamental, private) |
| connate(adjective, characteristic, natural, essential, basic) |
| esoteric(adjective, private, mental, inner) |
| hidden(adjective, individual, original, basic, fundamental) |
| individual(adjective, characteristic, exact, certain, natural) |