The verb vindicate means that someone or their decisions, actions, or ideas are proved to be correct, after people have said they were wrong.
Synonyms are absolve, acquit, corroborate, or disprove.
The word origins from Latin vindicatus, past participle of vindicare meaning “to stake a claim; to liberate; to act as avenger”.
The investigation vindicated her complaint about the country’s biggest bank.
The decision to include Claire in the team was completely vindicated when she bagged two big contracts.
The director said he had been vindicated by the manager’s report.