| unforeseen(adjective, violent, fast, quick, abrupt) |
| brash(adjective, careless, careful, thoughtless, impulsive) |
| devil-may-care(adjective, careless, thoughtless, impulsive, rash) |
| fast(adjective, violent, quick, abrupt, rapid) |
| foolhardy(adjective, careless, careful, thoughtless, impulsive) |
| immediate(adjective, instantaneity) |
| incautious(adjective, careless, careful, thoughtless, impulsive) |
| madcap(adjective, violent, careless, fast, careful) |
| speedy |
| surprising(adjective, abrupt) |
| unanticipated(adjective, violent, fast, quick, abrupt) |
| unconsidered(adjective, careful, rash) |
| adventurous(adjective, careless, thoughtless, impulsive, rash) |
| audacious(adjective, careless, thoughtless, impulsive, rash) |
| bold(adjective, careless, thoughtless, impulsive, rash) |
| breakneck(violent, fast, quick, rash, reckless) |
| careless(thoughtless, impulsive, reckless, hasty) |
| daring(adjective, careless, thoughtless, impulsive, rash) |
| determined(adjective, careless, thoughtless, impulsive, rash) |
| discontinuous(adjective, instantaneity) |