renunciation in WordNet English dictionary

1. the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)
   apostasy  renunciation  defection 
   
2. the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)
   renunciation  forgoing  forswearing 
   
3. an act (spoken or written) declaring that something is surrendered or disowned
   renunciation  renouncement 
   
4. rejecting or disowning or disclaiming as invalid
   "Congressional repudiation of the treaty that the President had negotiated"
   repudiation  renunciation