alastor

/əˈlæstər/
noun
  1. In Greek mythology, a spirit or god of vengeance who punishes evil deeds.
    • Some poets describe Alastor as a relentless avenger.
    • In ancient stories, an Alastor would pursue those who committed terrible crimes.
    • The hero prayed to Alastor for justice against his enemies.
  2. A person who is relentless in seeking revenge or punishment.
    • After the betrayal, he became an alastor, never forgiving those who wronged him.
    • She warned that an alastor would not rest until justice was served.
    • The character in the novel is an alastor, driven by a need for vengeance.
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