| evil-minded |
| fatuous(adjective, silly, foolish, fantastic, unwise) |
| foolhardy(adjective, silly, foolish, fantastic, unwise) |
| goofy(adjective, silly, foolish, fantastic, unwise) |
| harebrained(adjective, silly, foolish, fantastic, unwise) |
| idiotic(adjective, silly, foolish, fantastic, unwise) |
| ill-favored |
| ill-gotten |
| impracticable(adjective, silly, foolish, fantastic, unwise) |
| improper |
| inane(adjective, silly, foolish, fantastic, unwise) |
| inappropriate(adjective, silly, foolish, fantastic, unwise) |
| insane(adjective, silly, foolish, fantastic, unwise) |
| irresponsible(adjective, silly, foolish, fantastic, unwise) |
| loony(adjective, silly, foolish, fantastic, unwise) |
| ludicrous(adjective, silly, foolish, fantastic, unwise) |
| nonsensical(adjective, silly, foolish, fantastic, unwise) |
| odd(adjective, silly, foolish, fantastic, unwise) |
| out of all reason(expression, adjective, idiom, wild, strange) |
| outrageous(adjective, silly, foolish, fantastic, unwise) |