14 possible answers to
Answers with 3 characters: ASS OAF Answers with 4 characters: BOZO CLOD DODO DOLT DOPE Answers with 5 characters: IDIOT MORON Answers with 6 characters: DIMWIT NITWIT Answers with 7 characters: FATHEAD DULLARD Answers with 9 characters: LAMEBRAIN