婆婆嘴

pópozuǐ ㄆㄛˊ ˙ㄆㄛ ㄗㄨㄟˇ

    • a nag
    • someone who repeats themselves tiresomely

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

May offend: sexist or sexual

Literally
a mother-in-law's mouth
Meaning
Someone who nags and repeats themselves until others lose patience. Mildly critical.

Sources