| giddy(adjective, careless, wild, foolish, stupid) |
| harebrained(adjective, careless, wild, silly, foolish) |
| high-strung(adjective, nervous, emotional, restless, fiery) |
| hives(noun, condition, reaction, eruption, outbreak) |
| hot-tempered(adjective, nervous, emotional, restless, fiery) |
| immature(adjective, careless, foolish, immoral, thoughtless) |
| insane(adjective, silly, violence, thoughtless, unwise) |
| insolent(adjective, rude, impulsive, aggressive, arrogant) |
| nervous(adjective, emotional, restless, volatile, fiery) |
| offhand(noun, adjective, thoughtless, impetuous, unwary) |
| out of the blue(adjective, sudden) |
| overconfident(adjective, rude, sure, arrogant, presuming) |
| overhasty(adjective, careless, foolish, thoughtless, impulsive) |
| precipitous(adjective, violent, fierce, quick, ardent) |
| shortsighted(adjective, dull, careless, reckless, unintelligent) |
| slapdash(adjective, careful, quick, speedy, oblivious) |
| stupid(adjective, dull, sharp, rough, harsh) |
| unadvised(adjective, smart, careless) |
| unguarded(adjective, careless, bold, thoughtless, impulsive) |
| volcanic(adjective, nervous, emotional, restless, fiery) |