Webster's Revised Unabridged Dictionary · 1913

Ingratitude

Ingratitude , noun

[French ingratitude, Latin ingratitudo. See Ingrate.]

Lack of gratitude; insensibility to, forgetfulness of, or ill return for, kindness or favors received; unthankfulness; ungratefulness.
Ingratitude, thou marble-hearted fiend. — Shakespeare
Ingratitude is abhorred both by God and man. — L'Estrange