renunciation

Short definition from Wiktionary

Noun

1. 1
   The act of rejecting or renouncing something as invalid.
2. 2
   The resignation of an ecclesiastical office.
3. 3
   The act by which a person abandons a right acquired, but without transferring it to another.
4. 4
   In the Anglican baptismal service, the part in which the candidate in person or by his sureties renounces the Devil and all his works.