He beseeched him, that, since he had not come to his assistance, while he was among the living, he would not suffer his death, however, to go Unrevenged.
"Miscellanies upon Various Subjects"
John Aubrey
The knowledge that a man is considered disgraced who allows the blood of his father or brother to pass Unrevenged makes many a murderer in thought pause, and depart from the deed.
"Persia Revisited"
Thomas Edward Gordon