renunciation

Sense 1 noun

rejecting or disowning or disclaiming as invalid

Congressional repudiation of the treaty that the President had negotiated

Sense 2 noun

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

Sense 3 noun

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

Sense 4 noun

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