bighead
noun [ C ] disapproving uk/ˈbɪɡ.hed/ us/ˈbɪɡ.hed/
自命不凡的人
someone who thinks that they are more important or cleverer than they really are
He's always boasting. He's such a bighead! 他老是吹牛。真是个自负的家伙！
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