咽苦水

Traditional (Taiwan): 嚥苦水

yànkǔshuǐ ㄧㄢˋ ㄎㄨˇ ㄕㄨㄟˇ

    • to suffer hardship in silence
    • to put up with it without protest

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
swallow bitter water
Meaning
To suffer hardship in silence and put up with it without protest.

Sources