碎嘴子

suìzuǐzi ㄙㄨㄟˋ ㄗㄨㄟˇ ˙ㄗ

    • endless chatterer or nagger
    • habit of chattering and nagging endlessly

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
broken-up mouth
Meaning
A person who chatters and nags endlessly, or the habit of doing so. Mildly critical.

Sources