renunciation

If you reject something or disown it, you can call this renunciation. Sorry, your renunciation of your membership in the American Association of Retired People will not make you any younger.

Use the noun renunciation especially when you mean you have given up your religious or political beliefs or some cause you previously supported. When you drop a political party to become an independent, you mean it to be a renunciation of all the infighting, backstabbing, and finger pointing that have become "politics as usual."

Definitions of renunciation
1

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

Synonyms:
forgoing, forswearing
Types:
forsaking, giving up
the act of forsaking
abnegation, denial, self-abnegation, self-denial, self-renunciation
renunciation of your own interests in favor of the interests of others
Type of:
rejection
the act of rejecting something

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

Synonyms:
renouncement
Types:
relinquishing, relinquishment
a verbal act of renouncing a claim or right or position etc.
giving up, surrender, yielding
a verbal act of admitting defeat
Type of:
resignation
the act of giving up (a claim or office or possession etc.)

n rejecting or disowning or disclaiming as invalid

Synonyms:
repudiation
Types:
disclaimer
(law) a voluntary repudiation of a person's legal claim to something
disowning, disownment
refusal to acknowledge as one's own
Type of:
rejection
the speech act of rejecting

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

Synonyms:
apostasy, defection
Type of:
rejection
the state of being rejected

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