| immediate(noun, adjective, free, instinctive, sudden) |
| unconstrained(adjective, feature, characteristic, free, simple) |
| unrehearsed(adjective, free, plain, impulsive, unprepared) |
| emotional(noun, adjective, moving, passionate, violent) |
| extempore(adjective, free, simple, fake, informal) |
| knee-jerk(adjective, natural, emotional, impulsive, unconscious) |
| naive(adjective, simple, easy, pure, green) |
| spur-of-the-moment(noun, adjective, free, fake, informal) |
| unasked(adjective, feature, characteristic, free, regard) |
| unstudied(adjective, free, simple, easy, impulsive) |
| habitual(adjective, reasonable, common, ordinary, natural) |
| informal(adjective, free, simple, plain, relaxed) |
| impetuous(noun, adjective, moving, passionate, violent) |
| improvised(adjective, free, impulsive, willing, impulse) |
| reflex(adjective, natural, routine, impulsive, planned) |
| unbidden(adjective, free, deliberate, natural, impulsive) |
| unconscious(adjective, careless, casual, impulsive, willing) |
| casual(adjective, calm, free, fake, plain) |
| intuitive(adjective, reasonable, natural, instinctive, automatic) |
| normal(adjective, ordinary, natural, instinctive, automatic) |