knucklehead Synonyms

shithead dunce dunderhead muttonhead loggerhead bonehead numskull hammerhead lunkhead blockhead dumbass dimwit fuckhead boob twit birdbrain bozo asshole dumbhead airhead dickhead dope turkey hammerhead shark pinhead lamebrain numbskull halfwit dipstick dingbat chowderhead chav schmuck cabbagehead doofus nitwit moron dork goon neanderthal twerp thickskull galoot fool fathead dunderpate dummy dumb-bell donkey dolt