| loony(adjective, silly, foolish, stupid, unwise) |
| mental(adjective, simple, silly, foolish, mad) |
| nuts(adjective, silly, crazy, mad, insane) |
| of unsound mind(expression, adjective, idiom, silly, mad) |
| distracted(verb, adjective) |
| nutty(adjective, silly, foolish, crazy, mad) |
| sick(adjective, ill, unhealthy, frail) |
| barmy(adjective, silly, foolish, mad, insane) |
| dotty |
| certifiable |
| irrational(adjective, strange, foolish, stupid, hot) |
| not all there(expression, adjective, idiom, crazy, unstable) |
| out to lunch(expression, adjective, idiom, silly, mad) |
| potty(adjective, silly, foolish, mad, insane) |
| psycho(silly, foolish, mad, insane, unwise) |
| queer(adjective, unusual, strange, crazy, odd) |
| unsettled(adjective, foolish, stupid, hot, crazy) |
| crackers |
| cuckoo(adjective, silly, foolish, stupid, crazy) |
| disconnected(verb, adjective, clear, separate, free) |