vindicate

verb

• To clear of an accusation, suspicion or criticism.

  "to vindicate someone's honor"

• To justify by providing evidence.

  "to vindicate a right, claim or title"

• To maintain or defend (a cause) against opposition.

  "to vindicate the rights of labor movement in developing countries"

• To provide justification for.

  "The violent history of the suspect vindicated the use of force by the police."

• To lay claim to; to assert a right to; to claim.
• To liberate; to set free; to deliver.
• To avenge; to punish

  "a war to vindicate infidelity"