Infliction of injury, harm, humiliation, or the like, on a person by another who has been harmed by that person; violent revenge. (Dictionary.com)
An act or opportunity of inflicting such trouble: (Dictionary.com)
The desire for revenge: (Dictionary.com)
With great force or vehemence. (Merriam – Webster)
To an extreme or excessive degree. (Merriam – Webster)
Punishment inflicted or retribution exacted for an injury or wrong. (Oxford Dictionaries)
Used to emphasise the degree to which something occurs or is true. (Oxford Dictionaries)
What is the experiental content of desire for vengeance and how does it contribute to actual revenge?
Emotion, Violence, Vengeance and Law in the Middle Ages.
God is love not vengeance.