One who receives a benefit from another, or is otherwise an object of charity. "All men are ingrates," sneered the cynic. "Nay," The good philanthropist replied; "I did great service to a man one day Who never since has cursed me to repay, Nor vilified." "Ho!" cried the cynic, "lead me to him straight -- With veneration I am overcome, And fain would have his blessing." "Sad your fate -- He cannot bless you, for

An ungrateful person.

a person who shows no gratitude

Ingrateful.