| kookie(adjective, mind, behavior, idiotism) |
| kooky(adjective, mind, behavior, idiotism) |
| lamebrain(adjective, mind, behavior, idiotism) |
| lamebrained(adjective, mind, behavior, idiotism) |
| laughable(adjective, characteristic, stupidity, foolishness) |
| looney(adjective, mind, behavior, idiotism) |
| loony(adjective, mind, behavior, idiotism) |
| loser(adjective, characteristic, stupidity, foolishness) |
| lowbrow(adjective, mind, behavior, idiotism) |
| ludicrous(adjective, characteristic, stupidity, foolishness) |
| lunatic(adjective, mind, behavior, idiotism) |
| lunkheaded(adjective, mind, behavior, idiotism) |
| mad(adjective, mind, behavior, idiotism) |
| meaningless(adjective, characteristic, stupidity, foolishness) |
| non-rational(adjective, characteristic, stupidity, foolishness) |
| nonintellectual(adjective, mind, behavior, idiotism) |
| nonrational(adjective, mind, foolishness, disability) |
| nonthinking(adjective, mind, foolishness, disability) |
| not smart(expression, characteristic, stupidity, foolishness) |
| nutty(adjective, mind, behavior, idiotism) |