ingratitude
/ɪnˈgrætɪtjuːd/noun
mass noun
- a discreditable lack of gratitude忘恩负义：
he returned his daughter's care with ingratitude and unkindness.
他以忘恩负义、苛刻无情来回报女儿的照顾。
词源
Middle English: from Old French, or from late Latin ingratitudo, from Latin ingratus 'ungrateful' （see INGRATE）.