| nutty as fruitcake(expression, crazy, hysterical, lunatic, psychotic) |
| of unsound mind(expression, off, hacked, lunatic, dotty) |
| off(adjective, sane, dotty) |
| off one's block(expression, crazy, mad, insane) |
| off one's onion(expression, crazy, mad, insane) |
| off one's rocker(expression, crazy, mad, insane) |
| off one's trolley(expression, crazy, mad, insane) |
| off the air(expression, crazy, mad, insane) |
| one short of a dozen(expression, crazy, mad, insane) |
| out of one's head(expression, crazy, mad, insane) |
| over the edge(expression, crazy, mad, insane) |
| psychopathic(crazy, hysterical, psychotic) |
| psychotic(crazy, hysterical) |
| round the bend(expression, crazy, mad, insane) |
| schitzy(crazy, hysterical, hacked, lunatic, psychotic) |
| schizoid(crazy, hysterical, hacked, lunatic, psychotic) |
| sick |
| sick in the head(expression, crazy, sick, hacked, lunatic) |
| stark raving mad(expression, idiom, crazy, sick, off) |
| unsound(adjective, crazy, sick, sane, hysterical) |