bonehead
noun [ C ] slang uk/ˈbəʊn.hed/ us/ˈboʊn.hed/
傻瓜，笨蛋
a stupid person
Synonyms: blockhead dunce dunderhead knucklehead numskull
bonehead
adjective [ before noun ] slang uk/ˈbəʊn.hed/ us/ˈboʊn.hed/
非常愚蠢
very stupid
That was some bonehead behaviour. 那是极其愚蠢的行为。