I / ingrātĭtūdo
noun

ingrātĭtūdo

gen. ĭnis · gender feminine · decl. 3rd
Unthankfulness; ingratitude
Unthankfulness, ingratitude (late Lat. for animus ingratus), Firm. 5, 1 med.; Cassiod. Var. 5, 8.—
Displeasure
Displeasure, Cassiod. Var. 1, 30.