screwball
- Answer CRAZY
- Answer FLAKE
- Answer HEADCASE
- Answer INANE
- Answer KOOK
- Answer KOOKY
- Answer LOON
- Answer NUT
- Answer NUTCASE
- Answer NUTTY
- Answer OFFTHEWALL
- Answer QUEERFISH
- Answer SENSELESS
- Answer WACK
- Answer WACKO
- Answer WACKY
- Answer WILDANDCRAZYGUY
- Answer ZANY