嘴皮子硬

zuǐpíziyìng ㄗㄨㄟˇ ㄆㄧˊ ˙ㄗ ㄧㄥˋ

    • stubborn in argument
    • twisting logic rather than admit being wrong

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
hard lips
Meaning
Describes someone who argues stubbornly and twists the logic rather than admit being wrong. Critical.

Sources