| native(adjective, reasonable, ordinary, instinctive, automatic) |
| nonvoluntary |
| normal(adjective, ordinary, natural, instinctive, automatic) |
| reflexive(noun, adjective, dissatisfied, unwilling, obligatory) |
| regular(adjective, ordinary, normal, instinctive, automatic) |
| rooted(adjective, natural, instinctive, automatic, reflex) |
| second-nature(adjective, instinctive, automatic, reflex, instinctual) |
| typical(adjective, ordinary, normal, instinctive, automatic) |
| unplanned(noun, adjective, simple, natural, casual) |
| unwilled(adjective, unconscious) |
| averse(adjective, difficult, awkward, unenthusiastic, forced) |
| conditioned(adjective, unwilling, obligatory, automatic, compulsory) |
| disinclined(adjective, difficult, awkward, unenthusiastic, forced) |
| indisposed(adjective, difficult, awkward, unenthusiastic, forced) |
| inevitable(adjective, simple, natural, casual, impulsive) |
| necessary(adjective, required) |
| perfunctory(adjective, cold, natural, useful, fixed) |
| undesigned(adjective, unknowing, necessity, unaware, unplanned) |
| unvoluntary |
| accidental(adjective, careless, casual, innocent, ignorant) |