| congenital(adjective, natural, inside, interior, automatic) |
| inherent(adjective, natural, inside, interior, automatic) |
| intrinsic(adjective, natural, inside, interior, automatic) |
| intuitional(adjective, natural, inside, interior, automatic) |
| repercussion(noun, end, feeling, event, return) |
| uncontrolled(adjective, unwilling, obligatory, automatic, compulsory) |
| unintentional(adjective, ignorant, hidden, unconscious, unaware) |
| unwitting(adjective, ignorant, hidden, unconscious, unaware) |
| accustomed(adjective, natural, inside, interior, automatic) |
| ingrained(adjective, natural, inside, interior, automatic) |
| rooted(adjective, natural, inside, interior, automatic) |
| second-nature(adjective, primitive, inside, interior, inherent) |
| unconditioned reflex(noun, expression, idiom) |
| visceral(adjective, natural, primitive, inside, instinctive) |
| innate reflex(noun, expression, idiom) |
| instinctive reflex(noun, expression, idiom) |
| response(noun, end, feeling, event, return) |
| reverberation(noun, feeling, return, attitude, answer) |
| answer(noun, feeling, return, attitude, opinion) |
| conditioned(adjective, unwilling, obligatory, compulsory) |