vindicate

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