| Odd |
| Bats |
| Daft |
| Nuts |
| Dotty |
| Nutso |
| Ditsy |
| Ditzy |
| Bizarre |
| Bonkers |
| Offbeat |
| Eccentric |
| Velcro-like |
| A bit wacko |
| Strange ____ |
| Not all there |
| Slightly nuts |
| Slightly daft |
| A bit bonkers |
| Eccentric: sl. |
| A bit peculiar |
| A bit eccentric |
| Off one's rocker |
| Disoriented, say |
| Off one's trolley |
| Whimsically nutty |
| A little bit crazy |
| Touched in the head |
| Nutty as a fruitcake |
| Missing a few marbles |
| Eccentric, to put it nicely |
| One fry short of a Happy Meal |
| Responding to medication, perhaps |
| A bit crazy, or like rounded handwriting |
| Like the signatures of outgoing people, it's said |