THESAURUS
disaffirmation
abjuration, abjurement, abrogation, absolute contradiction, annulment, contradiction, contrary assertion, contravention, controversion, countering, crossing, denial, disallowance, disavowal, disclaimer, disclamation, disownment, disproof, forswearing, gainsaying, impugnment, nullification, recantation, refutation, renunciation, repudiation, retractation, retraction, revocation