verb (v)

• show to be right by providing justification or proof(verb.communication)

  Example:
  Vindicate a claim.
  

  Synonym:
  justify
  

  source: wordnet30
• maintain, uphold, or defend(verb.communication)

  Example:
  Vindicate the rights of the citizens.
  

  source: wordnet30
• clear of accusation, blame, suspicion, or doubt with supporting proof(verb.communication)

  Example:
  You must vindicate yourself and fight this libel.
  

  source: wordnet30
• To lay claim to; to assert a right to; to claim.(verb)

  source: webster1913