有口无心

Traditional (Taiwan): 有口無心

On the HSK 7-9 vocabulary list, at CEFR level C2.

yǒukǒuxīn ㄧㄡˇ ㄎㄡˇ ㄨˊ ㄒㄧㄣ

    • to speak harshly but without any bad intent (idiom)

Character by character

Sources