Num·skull n. A dunce; a dolt; a stupid fellow. [Also spelled numbskull.] [Colloq.]
They have talked like numskulls. --Arbuthnot.
n : these words are used to express a low opinion of someone's
intelligence [syn: dunce, dunderhead, blockhead, bonehead,
lunkhead, hammerhead, knucklehead, loggerhead, muttonhead,