忘恩负义

忘恩负义 [wàng ēn fù yì]

1. ■ devoid of gratitude; be ungrateful and act contrary to justice; be ungrateful and leave one's benefactor in the lurch; be ungrateful and treacherous; be ungrateful to kindness; forget a favour done or good deed performed; forget sb.'s kindness and turn one's back upon him in return; have no sense of gratitude and justice; kick out someone after his services -- no longer needed; show ingratitude for favours [kindnesses] received; show no sense of gratitude; throw over those who helped one; turn one's back on righteousness and forget kindness; turn on one's friend; ungrateful; ungrateful to sb. for favors bestowed:

不要忘恩负义。 Don't cut down the tree that gives you shade.