repudiation

noun

1. 1

   the exposure of falseness or pretensions

   the debunking of religion has been too successful

2. 2

   refusal to acknowledge or pay a debt or honor a contract (especially by public authorities)

   the repudiation of the debt by the city

3. 3

   rejecting or disowning or disclaiming as invalid

   Congressional repudiation of the treaty that the President had negotiated