avenger
/ˈævɛndʒər/Definitions
1. noun
A person who seeks revenge for a past wrong or injury.
“The mafia boss was known as an avenger who punished those who crossed him.”
2. verb
To take revenge for a past wrong or injury.
“The victim vowed to avenger her sister’s killer.”
3. noun
A person or thing that avenges or averages.
“In the movie, the avenger was a masked vigilante fighting crime.”