出餿主意

Simplified: 出馊主意

chūsōuzhǔyi ㄔㄨ ㄙㄡ ㄓㄨˇ ˙ㄧ

    • to suggest a poor, unwise plan

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
offer a spoiled idea
Meaning
To suggest a poor, unwise plan. Mocking or critical.

Sources