revengeful

/rɪˈvɛndʒfəl/
adjective
  1. Wanting or planning to harm someone because they have harmed you; full of a desire for revenge.
    • His revengeful attitude only made the conflict worse.
    • After the argument, she felt revengeful and refused to speak to him.
    • The villain in the play is a revengeful character who plots against everyone.