in·gratitude \(ˈ)in, ən+\noun Etymology: Middle English, from Middle French, from Medieval Latin ingratitudo, from Latin in- in- (I) + Late Latin gratitudo gratitude — more at gratitude : lack of gratitude : forgetfulness of or poor return for kindness received : ungratefulness < blow, thou winter wind! thou art not so unkind as man's ingratitude — Shakespeare >