忘恩负义

wàng ēn fù yì

ungrateful

Character by character

忘wàng
forget

恩ēn
kindness

负fù
betray

义yì
duty

做人不能忘恩负义。

You mustn't be ungrateful.

Tone: negative (criticism).

Strong condemnation of someone who turns on a benefactor.

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