renunciation

Noun

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

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

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

• rejecting or disowning or disclaiming as invalid
  • Congressional repudiation of the treaty that the President had negotiated
    

Related words

• Synonyms: 
  forgoing , forswearing , renouncement , apostasy , defection , repudiation