| inconsiderate(careless, foolish, thoughtless, rash, unwise) |
| irresponsible(adjective, careless, foolish, thoughtless, reckless) |
| negligent(careless, reckless, obtuse, imprudent, unperceptive) |
| out of place(expression, idiom) |
| overhasty(adjective, careless, foolish, thoughtless, impulsive) |
| reflexive(adjective, impulsive) |
| short-sighted(adjective, weak, simple, silly, foolish) |
| stupid(adjective, weak, simple, careless, silly) |
| unfitting |
| unintelligent(adjective, weak, simple, silly, foolish) |
| unpremeditated(adjective, impulsive) |
| unreasonable(weak, simple, careless, silly, foolish) |
| unreflective(careless, stupid, unthinking, candid, spontaneous) |
| wild |
| absurd(weak, simple, silly, foolish, thoughtless) |
| daring(adjective, careless, thoughtless, impulsive, rash) |
| determined(adjective, careless, thoughtless, impulsive, rash) |
| devil-may-care(adjective, careless, immoral, thoughtless, impulsive) |
| dippy(adjective, weak, simple, silly, foolish) |
| extemporaneous(adjective, impulsive, unprepared) |