16 possible answers to
Answers with 3 characters: ASS Answers with 4 characters: BOOB BOZO CLOD DODO DOLT DOPE LUNK SIMP TWIT Answers with 5 characters: GOONY IDIOT MORON Answers with 6 characters: NITWIT Answers with 9 characters: DINGALING Answers with 11 characters: KNUCKLEHEAD