The verb exonerate means to show or state that someone is not guilty of something.
Synonyms are absolve, acquit, discharge, or dismiss.
The word origins from Latin exoneratus, past participle of exonerare meaning “remove a burden, discharge, unload”. It comes from ex meaning “out, out of, off” plus onerare meaning “to unload, overload, oppress”, from onus meaning “burden”.
The police were ordered to immediately exonerate everyone in the list.
The evidence is enough to exonerate the school from any accusation.
The manager wants to exonerate the crew from all responsibility for the incident.