From what you have just now sung I gather that yours spring from love, I mean from the love you bear that fair ingrate you named in your lament.
My good squire Sancho will relate to thee in full, fair ingrate, dear enemy, the condition to which I am reduced on thy account: if it be thy pleasure to give me relief, I am thine; if not, do as may be pleasing to thee; for by ending my life I shall satisfy thy cruelty and my desire.
I only tell you that I shall preserve for ever inscribed on my memory the service you have rendered me in order to tender you my gratitude while life shall last me; and would to Heaven love held me not so enthralled and subject to its laws and to the eyes of that fair ingrate whom I name between my teeth, but that those of this lovely damsel might be the masters of my liberty.
ůsteeds in haste to rise betimes and come forth to see my lady; when thou seest her I entreat of thee to salute her on my behalf: but have a care, when thou shalt see her and salute her, that thou kiss not her face; for I shall be more jealous of thee than thou wert of that light-footed ingrate that made thee sweat and run so on the plains of Thessaly, or on the banks of the Peneus (for I do not exactly recollect where it was thou didst run on that occasion) in thy jealousy and love.
At last the cloth being removed, Don Quixote with great composure lifted up his voice and said: "One of the greatest sins that men are guilty of is—some will say pride—but I say ingratitude, going by the common saying that hell is full of ingrates.
There are no more uses of "ingrate" in the book.
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And just when he had gotten it to the point of learning to eat nothing at all, the ingrate up and died.
Jane Yolen -- The Devils Arithmetic
They found out we had my father in Comfort Hill and that I rarely visited, and thus 1 was an ingrate dad-abandoner.