负义 
负义[負義] ⁵fùyì v.o. ①shirk one's responsibilities ②be ungrateful
忘恩负义 忘恩负义 [wàng'ēnfùyì] to forget favors and violate justice (idiom); ingratitude to a friend; to kick a benefactor in the teeth 
忘 忘 forget / - / perish heart forget 恩 恩 grace / - / cause heart grace 負 负 defeat / - / ropebound shellfish defeat 義 义 righteousness / - / sheep ego righteousness