| quaint(adjective, unusual, wild, strange, usual) |
| round the bend(expression, adjective, idiom, silly, foolish) |
| screwy(adjective, silly, crazy, mad, dubious) |
| singular(adjective, unusual, wild, strange, usual) |
| erratic(adjective, strange, silly, crazy, mad) |
| irrational(adjective, weak, simple, unusual, wild) |
| loco |
| quirky(adjective, unusual, wild, strange, usual) |
| rum(adjective, extraordinary, unusual, strange, usual) |
| screwball(adjective, slang, silly, foolish, crazy) |
| unnatural(adjective, unusual, wild, strange, usual) |
| unusual(adjective, strange, silly, foolish, crazy) |
| zany(adjective, weak, simple, silly, foolish) |
| anomalous(adjective, unusual, wild, strange, crazy) |
| cranky(adjective, usual, eccentric) |
| demented(adjective, wrong, unusual, wild, strange) |
| dippy(adjective, weak, simple, silly, foolish) |
| flaky(adjective, silly, crazy, mad, irregular) |
| offbeat(adjective, unusual, wild, strange, crazy) |
| psychotic(adjective, crazy, mad, unstable, insane) |