Retaliate
Part of speech: verb
Definition: To do something harmful or negative to get revenge for some harm; to fight back or respond in kind to an injury or affront.
Revenge
Part of speech: verb
Definition: To take one's revenge (on or upon) someone.To take revenge for (a particular harmful action), to avenge.To take vengeance.
Part of speech: noun
Definition: Any form of personal retaliatory action against an individual, institution, or group for some perceived harm or injustice.
Example sentence: I'm not one to take revenge. If someone does something wrong to me I leave it in the hands of the universe to take care of that person.