vindicator

/ˈvɪndɪˌkeɪtər/
noun
  1. A person or thing that proves someone or something is right, correct, or innocent.
    • The lawyer acted as a vindicator for the wrongly accused man.
    • History has often been the vindicator of unpopular but correct ideas.
    • The new evidence was the vindicator that finally cleared her name.
Antonyms
What does "vindicator" mean? | whatsthatwordmean | whatsthatwordmean