renunciation, repudiation - rejecting or disowning or disclaiming as invalid; "Congressional repudiation of the treaty that the President had negotiated"

jurisprudence, law - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order"

denial - the act of refusing to comply (as with a request); "it resulted in a complete denial of his privileges"

abjuration, recantation, retraction - a disavowal or taking back of a previous assertion