| mindless(adjective, wild, casual, thoughtless, negligent) |
| unanticipated(adjective, violent, fast, quick, unexpected) |
| unforeseen(adjective, violent, fast, quick, abrupt) |
| waspish(irritable, tetchy, snippy, excitable, irascibility) |
| whirlwind(noun, adjective, fast, quick, rapid) |
| active(adjective, movement, moving, hot, fast) |
| agile(adjective, prompt, hot, fast, quick) |
| choleric(adjective, keen, difficult, cross, violent) |
| express(adjective, fast, quick, rapid, speedy) |
| extemporaneous(adjective, thoughtless, impulsive, impetuous, unwary) |
| hot-tempered(adjective, keen, difficult, violent, anxious) |
| passionate(violent, restless, impulsive, fiery, turbulent) |
| peevish(adjective, difficult, cross, nervous, irritable) |
| premature(adjective, careless, thoughtless, impulsive, rash) |
| quick-tempered(adjective, keen, cross, violent, anxious) |
| rough(adjective, sharp, careless, thoughtless, insensitive) |
| running(adjective, moving, active, effective, alive) |
| spontaneous(adjective, thoughtless, impulsive, rash, unthinking) |
| testy(adjective, keen, cross, violent, anxious) |
| unwary(adjective, careless, foolish, thoughtless, impulsive) |