Bonehead (bōn'hĕd')

Bonehead (bōn'hĕd'):

n. Informal.
A stupid person; a dunce.

Meaning #1: these words are used to express a low opinion of someone's intelligence Synonyms: dunce, dunderhead, numskull, blockhead, lunkhead, hammerhead, knucklehead, loggerhead, muttonhead, shithead, fuckhead