捅破窗戶紙

Simplified: 捅破窗户纸

tǒngpòchuānghuzhǐ ㄊㄨㄥˇ ㄆㄛˋ ㄔㄨㄤ ˙ㄏㄨ ㄓˇ

    • to spell it out
    • to expose a secret

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
poke through the paper window
Meaning
To say openly what has been left hinted or unsaid, or to expose a secret. Like English 'spell it out'.

Sources