ingratitude n 1: a lack of gratitude [syn: {ingratitude}, {ungratefulness}] [ant: {gratitude}]
Ingratitude \In*grat"i*tude\, n. [F. ingratitude, L. ingratitudo. See {Ingrate}.] Lack of gratitude; insensibility to, forgetfulness of, or ill return for, kindness or favors received; unthankfulness; ungratefulness. [1913 Webster] Ingratitude, thou marble-hearted fiend. --Shak. [1913 Webster] Ingratitude is abhorred both by God and man. --L'Estrange. [1913 Webster]