tr.v. a·venged, a·veng·ing, a·veng·es
1. To inflict a punishment or penalty in return for; revenge: avenge a murder.
2. To take vengeance on behalf of: avenged their wronged parents.
[Middle English avengen, from Old French avengier : a-, to (from Latin ad-; see AD-) + vengier, to vindicate (from Latin vindicāre, to claim; see VINDICATE).]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.