28 possible answers to
Answers with 3 characters: NUT ODD DTY Answers with 4 characters: BENT KOOK Answers with 5 characters: BATTY CRANK DOTTY FLAKE FLAKY GONZO KOOKY LOOPY NUTTY OUTRE QUEER SPACY WACKY WEIRD WIGGY Answers with 6 characters: QUIRKY SCREWY WEIRDO Answers with 7 characters: ODDBALL NUTCASE OFFBEAT Answers with 8 characters: ABNORMAL CRACKPOT