That which corroborates.
The act of corroborating, strengthening, or confirming; addition of strength; confirmation
The resignation of an ecclesiastical office.
In the Anglican baptismal service, the part in which the candidate in person or by his sureties renounces the Devil and all his works.
The act of rejecting or renouncing something as invalid.
The act by which a person abandons a right acquired, but without transferring it to another.