wàng'ēn​fù​yì

ungrateful

忘恩负义 (忘恩負義) wàng'ēn​fù​yì
ungrateful idiom
to forget favors and violate justice; to show base ingratitude toward a benefactor

His ungrateful behavior disheartened everyone who had once helped him.

Frequency

Movie subtitles
2.30 per million appears in 1% of films
Written text
0.610 per million

Sources

Definitions
CC-CEDICT