Verb (used with object), : to avenge a grave insult. ,He avenged his brother.    From Dictionary.com. 

I would rather be left with the unavenged suffering.    From Wordnik.com.  [The Brothers Karamazov] Reference

But hence! — think not my wrongs shall be unavenged. —.    From Wordnik.com.  [Quentin Durward] Reference

Now he has, and I cannot let his challenge go unavenged. '.    From Wordnik.com.  [The White Ninja]

'Death it will be,' she cries, 'and unavenged; but death be it.    From Wordnik.com.  [The Aeneid of Virgil] Reference

Kriemhild, that she would not leave unavenged her dole of heart.    From Wordnik.com.  [The Nibelungenlied] Reference

"I want you to know that what happened to Steve did not go unavenged,".    From Wordnik.com.  [Bennefeld, Steven H.] Reference

He must not harm his mother, but not doing so leaves his father unavenged.    From Wordnik.com.  [Modality and Hamlet] Reference

What he wouldn't be able to tolerate was that his death had gone unavenged.    From Wordnik.com.  [Fat Tuesday]

Then Oliver knew he was stricken to death, but he would not fall unavenged.    From Wordnik.com.  [Famous Tales of Fact and Fancy Myths and Legends of the Nations of the World Retold for Boys and Girls] Reference

But the crime of murdering his own mother was not long unavenged by the gods.    From Wordnik.com.  [Myths and Legends of Ancient Greece and Rome] Reference

Another MK speaker, Zola Mlamli, said Mr Hani's death would not go unavenged.    From Wordnik.com.  [ANC Daily News Briefing] Reference

"Had you let your friend go unavenged, I would no longer be interested in you.".    From Wordnik.com.  [The Saracen: Land of the Infidel] Reference

I am, by your help, taking a precaution to ensure that I shall not die unavenged.    From Wordnik.com.  [The Ashiel mystery A Detective Story] Reference

Well, he's going to his funeral unavenged, for we're no nearer knowing who killed him.    From Wordnik.com.  [The Raven In The Foregate]

Its historical perspective loomed dark: women were strangled and spent eternity unavenged.    From Wordnik.com.  [Hollywood Nocturne]

If wrong had been left unavenged in this life, the Almighty would deal with it in the next.    From Wordnik.com.  [Ellery Queen Mystery Magazine]

And, it blazed upon me, I might have died there by the sheer ebbing of my will — unavenged!.    From Wordnik.com.  [In the Days of the Comet] Reference

Cadfael, I tell you, I feel as you do about this business, such a death must not go unavenged.    From Wordnik.com.  [One Corpse Too Many]

When the Judge his seat attaineth, and each hidden deed arraigneth, nothing unavenged remaineth.    From Wordnik.com.  [Archive 2009-06-01] Reference

Long since I have heard it said of Kriemhild, that she would not leave unavenged her dole of heart.    From Wordnik.com.  [The Nibelungenlied] Reference

James Byrd was a -somehow - unavenged "lynching" even though the three killers are all on death row.    From Wordnik.com.  [Do you worry about what black people will think if Barack Obama loses?] Reference

'And shall my dear love go unavenged, because there is no knight here who shall achieve this sword?'.    From Wordnik.com.  [King Arthur's Knights The Tales Re-told for Boys & Girls] Reference

If an insult to you goes unavenged for any length of time, that reflects on the honor of all the Blues.    From Wordnik.com.  [And Other Tales Of Valdemar]

Braddock's unavenged defeat had reanimated the French with the hope of driving the English from America.    From Wordnik.com.  [The Land We Live In The Story of Our Country] Reference

And to found that edifice on its unavenged tears: would you consent to be the architect on those conditions?.    From Wordnik.com.  [The Volokh Conspiracy » No Establishment Clause Violation in San Francisco’s Condemning the Catholic Church’s Refusal To Help With Adoptions by Same-Sex Couples:] Reference

Why should US Marines die to avenge them, when soldiers who were killed in similiar ways were left unavenged?.    From Wordnik.com.  [Archive 2004-04-01] Reference

But that reason only worked so long as Red Tusk was alive-naturally, that was a score that could not remain unavenged.    From Wordnik.com.  [Emperor of Ansalon]

Tamatoa hesitated, as if probing his younger brother's mind, and then added petulantly, "And my death would go unavenged.".    From Wordnik.com.  [Hawaii]

Men thought that Olaf would be for ever unavenged, because Howard was too feeble, and his adversary too mighty and too unjust.    From Wordnik.com.  [Hero-Myths & Legends of the British Race] Reference

How sad is Cuchulain's plaint that his son Connla must go down to the grave unavenged, since his own father slew him, all unwitting!.    From Wordnik.com.  [Hero-Myths & Legends of the British Race] Reference

Dawes 'unameliorated servitude and unavenged fate were intended to symbolise glaring anomalies of justice which never were remedied.    From Wordnik.com.  [Australian Writers] Reference