She vowed to 'avenge herself' [=to get revenge], saying she would make him pay for what he had done to her.
The team is out to 'avenge' last week's defeat. [=to defeat the team that they were defeated by last week]
They vowed to 'avenge' their father by capturing and punishing his killer.
(..) place for her. - You cannot stop it. - No! No, wait. It wasn't her. You can't avenge him if you're dead. On behalf of the warlocks of Qarth, I welcome you. It would be an honor to host you at the House of the Undying, Mother of Dragons. (..)2012 TvShow: Game of Thrones Title: The Old Gods and the New Season: 2 Episode 6