(n.) The act of exculpating from alleged fault or crime; that which exculpates; excuse.

absolution acquittal acquittance amnesty clearance clearing compurgation destigmatization destigmatizing discharge disculpation dismissal excuse exemption exoneration explanation forgiveness grace immunity indemnity justification pardon purgation purging quietus quittance rationalization redemption rehabilitation reinstatement release remission remission of sin reprieve restoration shrift sparing verdict of acquittal vindication