| unmeditated(adjective, natural, thoughtless, impulse, instinctive) |
| unprepared(adjective, free, ready, impromptu, unplanned) |
| ad-lib(adjective, impulsive, willing, unprepared, impromptu) |
| intended(verb, adjective, feature, characteristic, free) |
| off the cuff(expression, adjective, idiom, free, impromptu) |
| regular(adjective, ordinary, normal, instinctive, automatic) |
| unlearned(adjective, natural, instinctive, untrained, automatic) |
| ad lib(expression, adjective, idiom, free, unrehearsed) |
| rash(noun, adjective, thoughtless, impulsive, unthinking) |
| uncompelled(adjective, free, deliberate, natural, impulsive) |
| unsolicited(adjective, for, uninvited, unsought) |
| visceral(adjective, natural, emotional, instinctive, automatic) |
| intentional(adjective, feature, characteristic, free, regard) |
| abrupt(adjective, thoughtless, impulsive, rash, unthinking) |
| accustomed(adjective, ordinary, normal, instinctive, automatic) |
| candid(simple, easy, honest, plain, pure) |
| congenital(adjective, reasonable, ordinary, instinctive, automatic) |
| easy(adjective, simple, plain, relaxed, casual) |
| hasty(adjective, thoughtless, impulsive, rash, unthinking) |
| inborn(adjective, reasonable, ordinary, instinctive, automatic) |