一窍不通

Traditional (Taiwan): 一竅不通

qiàotōng ㄧ ㄑㄧㄠˋ ㄅㄨˋ ㄊㄨㄥ

    • lit. doesn't (even) enter a single aperture (of one's head)
    • I don't understand a word (idiom)
    • it's all Greek to me

Character by character

Sources