| ill-conceived(silly, foolish, fantastic, impulsive, unwise) |
| ill-judged(foolish, thoughtless, unwise, impractical, risky) |
| illogical |
| imperceptive(adjective, unthinking) |
| impetuous |
| impracticable(silly, foolish, fantastic, unwise, impractical) |
| inane(silly, foolish, fantastic, rash, risky) |
| inappropriate(silly, foolish, fantastic, thoughtless, unwise) |
| intolerant |
| irresponsible(silly, foolish, fantastic, rash, risky) |
| jerky(weak, simple, silly, foolish, thoughtless) |
| kooky(weak, simple, silly, foolish, thoughtless) |
| loony(weak, simple, silly, foolish, fantastic) |
| ludicrous(adjective, weak, simple, silly, foolish) |
| lunatic(weak, simple, silly, foolish, thoughtless) |
| misguided(adjective, foolish, thoughtless, rash, unwise) |
| myopia |
| nerdy(weak, simple, silly, foolish, thoughtless) |
| niggardly |
| nutty(weak, simple, silly, foolish, thoughtless) |