renunciation

noun

1. rejecting or disowning or disclaiming as invalid

   noun.communication

   Synonyms repudiation

   Source: WordNet 3.0

2. the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)

   noun.state

   Synonyms apostasy defection

   Source: WordNet 3.0

3. an act (spoken or written) declaring that something is surrendered or disowned

   noun.communication

   Synonyms renouncement

   Source: WordNet 3.0

4. the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)

   noun.act

   Synonyms forgoing forswearing

   Source: WordNet 3.0

5. The act of renouncing.

   noun

   Source: webster1913