| frozen(adjective, hard, fixed, compact, dense) |
| implanted(verb, adjective, fixed, installed) |
| traditional(adjective, state, quality, firm, fashion) |
| inveterate(adjective, certain, determined, usual, regular) |
| confirmed(adjective, certain, determined, usual, regular) |
| normal(adjective, natural, usual, regular, routine) |
| visceral(adjective, natural, primitive, instinctive, automatic) |
| chronic(adjective, usual, fixed, persistent, established) |
| deep-rooted(adjective, fixed, persistent, impulse, continuous) |
| embedded(verb, adjective, strong, secure, substantial) |
| entrenched(verb, adjective, firm, determined, usual) |
| regular(adjective, determined, natural, usual, routine) |
| automatic(adjective, natural, inside, interior, within) |
| fast(adjective, strong, secure, fixed, impassive) |
| impulsive(adjective, natural, instinctive, automatic, involuntary) |
| involuntary(adjective, natural, instinctive, automatic, reflex) |
| mechanical(adjective, natural, established, instinctive, automatic) |
| native(adjective, natural, instinctive, automatic, inherent) |
| reflex(adjective, natural, inside, interior, automatic) |
| spontaneous(adjective, natural, instinctive, automatic, involuntary) |