| arbitrary(careless, casual) |
| artless(adjective, simple, easy, honest, pure) |
| baton |
| brash(adjective, thoughtless, impetuous, sudden, unwary) |
| conditioned(adjective, unwilling, obligatory, compulsory) |
| deliberate(adjective, feature, characteristic, free, natural) |
| down(adjective, impulsive, willing, unforced, unprompted) |
| effortless(adjective, calm, quiet, light, smooth) |
| forthright(adjective, calm, quiet, open, light) |
| furious(adjective, impulsive, rash, unthinking) |
| haphazard(adjective, organization, plan, accidental, unintended) |
| honest(adjective, weak, careless, natural, straightforward) |
| hurried(adjective, impulsive, rash, unthinking, sudden) |
| improv(adjective, free, simple, fake, informal) |
| improvisatory(free, informal, casual, impulsive, impulse) |
| improvise(informal, impulse, unplanned, extemporize, off-the-cuff) |
| improviso(free, informal, casual, unprepared, unplanned) |
| inadvertent(accidental, unintended) |
| indeliberate |
| inevitable(adjective, impulsive, willing, unforced, unprompted) |