| fatuous(weak, simple, silly, foolish, thoughtless) |
| fool |
| frail |
| half-baked(weak, simple, silly, foolish, thoughtless) |
| harebrained(weak, simple, silly, foolish, thoughtless) |
| honest |
| ill-advised(weak, simple, silly, foolish, thoughtless) |
| ill-considered(weak, simple, silly, foolish, thoughtless) |
| imprudent(weak, simple, silly, foolish, thoughtless) |
| inane |
| incautious(weak, simple, silly, foolish, thoughtless) |
| indiscreet(weak, simple, silly, foolish, thoughtless) |
| infirm |
| injudicious(weak, simple, silly, foolish, thoughtless) |
| insane(weak, simple, silly, foolish, thoughtless) |
| invertebrate |
| irrational(weak, simple, silly, foolish, thoughtless) |
| jerky(weak, simple, silly, foolish, thoughtless) |
| kooky(weak, simple, silly, foolish, thoughtless) |
| loony(weak, simple, silly, foolish, thoughtless) |