26 possible answers to
Answers with 4 characters: DAFT DUMB GAGA Answers with 5 characters: GOONY GOOSY INANE LOONY SAPPY SILLY Answers with 6 characters: INSANE CUCKOO SPOONY UNWISE Answers with 7 characters: ASININE IDIOTIC MESHUGA MORONIC WITLESS Answers with 8 characters: ANSERINE MINDLESS Answers with 9 characters: SENSELESS Answers with 10 characters: ADDLEPATED BONEHEADED Answers with 11 characters: ADDLEHEADED COCKBRAINED EMPTYHEADED