in·grat·i·tude 
/ɪnˈgrætəˌtu:d, Brit ɪnˈgrætəˌtju:d/ noun
/ɪnˈgrætəˌtu:d, Brit ɪnˈgrætəˌtju:d/ noun [noncount] : lack of proper appreciation or thanks for something (such as a kind or helpful act) : lack of gratitude
▪ He was hurt by his friends' ingratitude. [=ungratefulness] ▪ an act of ingratitude
▪ He was hurt by his friends' ingratitude. [=ungratefulness] ▪ an act of ingratitude
