Exonerate (verb)

1. Prove or declare that (someone) is not guilty of a crime or offense.
2. Relieve (someone) of a duty or responsibility.

Origin:

Late 16th century: from latin exonerat- "lightened, freed", from the verb exonerare, from ex- "thoroughly" + onus, oner- "a burden".

Examples:

1. The investigation exonerated him from any wrongdoing.
2. The evidence exonerated her from the accusations.
3. The lawyer's argument exonerated his client.
4. The company was exonerated from any responsibility for the accident.
5. The inquiry exonerated the government from any misconduct.