| mad(adjective, insane, sane, unwell, psychiatric) |
| psychotic(adjective, mad, insane, unwell, cuckoo) |
| demented(adjective, sane, unwell, cuckoo, neurotic) |
| lunatic(adjective, mad, insane, sane, unwell) |
| unbalanced(adjective, mad, insane, sane, unwell) |
| insane(adjective, mad, sane, unwell, cuckoo) |
| deranged(adjective, mad, insane, unwell, psychiatric) |
| disturbed(crazy, mad, sick, insane, psychiatric) |
| maniacal(adjective, sane) |
| mental(adjective, insane, psychiatric) |
| loco(adjective, slang, crazy, mad, sick) |
| paranoid |
| crazy(adjective, sick, sane, unwell, cuckoo) |
| daft(adjective, sane, unwell) |
| nuts(adjective, slang, mad, insane, sane) |
| non compos mentis(expression, adjective, law, mad, insane) |
| psychopathic(adjective, unwell, cuckoo, neurotic) |
| batty(adjective, slang, sane) |
| bonkers(adjective, informal, sane) |
| brainsick(adjective, crazy, sick, insane, sane) |