1. repudiation, renunciation, rejection

usage: rejecting or disowning or disclaiming as invalid; "Congressional repudiation of the treaty that the President had negotiated"

2. repudiation, refusal

usage: refusal to acknowledge or pay a debt or honor a contract (especially by public authorities); "the repudiation of the debt by the city"

3. repudiation, debunking, exposure

usage: the exposure of falseness or pretensions; "the debunking of religion has been too successful"

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See also: repudiation (Dictionary)