| ill-advised(adjective, foolish, thoughtless, rash, irresponsible) |
| imprudent(adjective, foolish, thoughtless, rash, impetuous) |
| inconsiderable(adjective, insignificant, unimportant, trivial, minor) |
| indiscreet(adjective, foolish, rash, irresponsible) |
| indiscriminate(adjective, careless, chance, casual, erratic) |
| irrational(adjective, rash) |
| madcap(noun, adjective, careful, thoughtless, rash) |
| precipitate(noun, adjective, passionate, violent, careful) |
| unadvised(adjective, smart, careless) |
| improvident(adjective, foolish, careful, rash, irresponsible) |
| inadvertent |
| injudicious(adjective, foolish, thoughtless, rash, irresponsible) |
| involuntary(noun, passionate, violent, thoughtless, abrupt) |
| irregular(adjective, careless, chance, casual, variable) |
| mindless |
| negligent(adjective, careless) |
| petty(adjective, light, small, insignificant, unimportant) |
| snap |
| spontaneous(noun, careless, casual, thoughtless, impetuous) |
| trifling(adjective, light, small, insignificant, unimportant) |