21 possible answers to
Answers with 3 characters: MAD Answers with 4 characters: BATS DAFT GAGA LOCO NUTS Answers with 5 characters: BATTY DIPPY DOTTY LOONY LOOPY NUTTY NUTSO WACKY Answers with 6 characters: CRAZED INSANE SCREWY Answers with 7 characters: BANANAS Answers with 8 characters: DERANGED Answers with 12 characters: MADASAHATTER Answers with 15 characters: NONCOMPOSMENTIS