1. (n.) A heavy, stupid fellow; a blockhead; a numskull; an ignoramus; a dunce; a dullard.

2. (v. i.) To behave foolishly.

Boeotian ass birdbrain block blockhead blunderer blunderhead bonehead boob booby boor botcher bumbler bungler chucklehead chump clod clodhopper clodknocker clot clown dimwit ding-a-ling dingbat dolthead donkey dope dullard dumb cluck dumbbell dummy dunce dunderhead dunderpate fathead flake fool fumbler gawk goon gowk idiot ignoramus imbecile jerk jobbernowl klutz lackwit lamebrain lightweight looby loon lout lubber lunkhead moron muggins niais nincompoop ninny ninnyhammer nitwit noddy numskull oaf ox pinhead put simpleton slouch slubberer stupid thickwit twit witling yokel