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