| freaky(adjective, unusual, strange, foolish, unstable) |
| gaga |
| maniacal(adjective, silly, foolish, crazy, mad) |
| neurotic(adjective, insane, lunatic) |
| of unsound mind(expression, adjective, idiom, silly, mad) |
| off-the-wall(adjective, character, wrong, unusual, strange) |
| off the wall(expression, adjective, idiom, unusual, crazy) |
| outrageous(adjective, silly, foolish, unwise) |
| psycho(adjective, silly, foolish, crazy, mad) |
| remarkable(adjective, unusual, strange, unexpected) |
| senseless(adjective, weak, simple, silly, foolish) |
| way-out(adjective, unusual, wild, strange, fantastic) |
| whacky |
| witless(adjective, weak, simple, silly, foolish) |
| aberrant(adjective, wild, strange, crazy, unreasonable) |
| bananas |
| bent(adjective, informal, unusual, wild, strange) |
| capricious(adjective, unusual, wild, strange, crazy) |
| delirious(adjective, silly, foolish, crazy, mad) |
| deviant |