a stupid, unpleasant or rough person, especially a man 傻瓜，蠢材，笨蛋（尤指男人） Word Originearly 17th cent.: variant of obsolete auf, from Old Norse álfr ‘elf’. The original meaning was ‘elf's child, changeling’, later ‘idiot child’ and ‘halfwit’, generalized in the current sense.