ingratitude /ɪnˈgrætəˌtuːd/ Brit /ɪnˈgrætəˌtjuːd/ noun /ɪnˈgrætəˌtuːd/ Brit /ɪnˈgrætəˌtjuːd/
noun
Learner's definition of INGRATITUDE
[noncount]
: lack of proper appreciation or thanks for something (such as a kind or helpful act) : lack of gratitude忘恩负义