| audacious(adjective, rash) |
| automatic(thoughtless, impetuous, unwary) |
| bold(adjective, rash) |
| designless(adjective, careless, casual, irregular, extensive) |
| desultory(adjective, careless, casual, irregular, extensive) |
| disregarded(abandoned, unseen, unkempt, deserted, ignored) |
| extemporaneous(noun, thoughtless, impetuous, unwary) |
| foolish(adjective, rash, irresponsible) |
| frivolous(insignificant, unimportant, minor) |
| harum-scarum(adjective, careful, rash) |
| hit-or-miss(adjective, careless, casual, irregular, extensive) |
| ignored(abandoned, unseen, unkempt, deserted, undiscovered) |
| ill-judged(foolish, rash, irresponsible) |
| impolitic(foolish, rash, irresponsible) |
| inadvisable(thoughtless, ill-advised) |
| inconsequent(adjective, light, small, insignificant, inadequate) |
| inexpedient(foolish, rash, irresponsible) |
| instinctive(noun, passionate, violent, thoughtless, abrupt) |
| irrelevant(adjective, insignificant, unimportant, minor) |
| minor(adjective, light, small, insignificant, unimportant) |