| idle |
| ill-advised(adjective, weak, simple, careless, foolish) |
| ill-considered(adjective, weak, simple, foolish, stupid) |
| lunatic(adjective, weak, simple, knowledge, ability) |
| maudlin(soft, sweet, foolish, emotional, wet) |
| sheepheaded(adjective, characteristic, foolish, absurd, stupidity) |
| weak-minded(adjective, ability, planned) |
| whacky |
| birdbrained(adjective, slang, ability, foolish, stupid) |
| blockhead(noun, simple, fool, innocent, jerk) |
| numskull(noun, simple, fool, innocent, jerk) |
| rattle-brained |
| simple-minded(adjective, foolish, stupid, green, fat) |
| slight(adjective, detail, small, trivial, worthless) |
| barmy(adjective, foolish, crazy, mad, trivial) |
| bird-brained(adjective, giddy) |
| bonehead(noun, simple, fool, innocent, jerk) |
| clod(noun, simple, fool, innocent, jerk) |
| confused(careless, stupid, unthinking, obtuse, unperceptive) |
| cracked(adjective, wild, foolish, stupid, crazy) |