| frivolous(silly, crazy, wacky) |
| futile(dull, unintelligent, witless) |
| hot-headed |
| inadvertent(careless, stupid, unthinking, obtuse, unperceptive) |
| inane(adjective, dull, careless, foolish, stupid) |
| incongruous(wrong, false, awkward, unsuitable, unfitting) |
| insane(adjective, weak, simple, silly, foolish) |
| insensate(dull, unintelligent, witless) |
| irrelevant(dull, unintelligent, witless) |
| late(negative, disapproving, uncomplimentary) |
| ludicrous(dull, simple, wrong, false, foolish) |
| malapropos(wrong, false, negative, awkward, unsuitable) |
| misdirected |
| misled(adjective, wrong, false, unreasonable, confused) |
| negligent(adjective, careless, wild, bold, thoughtless) |
| off base(expression, wrong, false, confused, incorrect) |
| playing with fire(expression, idiom, careless, wild, foolish) |
| premature(careless, thoughtless, impulsive, reckless, hasty) |
| regardless(adjective, careless, wild, foolish, stupid) |
| ridiculous(weak, simple, silly, foolish, thoughtless) |