Pronunciation: (vin'di-kāt"),[key] —v.t.,-cat•ed, -cat•ing. 1. to clear, as from an accusation, imputation, suspicion, or the like: to vindicate someone's honor. 2. to afford justification for; justify: Subsequent events vindicated his policy. 3. to uphold or justify by argument or evidence: to vindicate a claim. 4. to assert, maintain, or defend (a right, cause, etc.) against opposition.
5. to claim for oneself or another.
6. Roman and Civ. Law.to regain possession, under claim of title of property through legal procedure, or to assert one's right to possession.
7. to get revenge for; avenge.
8. Obs.to deliver from; liberate.
9. Obs.to punish.