renunciation

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

repudiation apostasy defection renouncement forgoing forswearing

renunciative