(n.) The act of nullifying; a rendering void and of no effect, or of no legal effect.

abjuration abjurement abolishment abolition abrogation absolute contradiction annihilation annulment autarky bimetallism cancel canceling cancellation cassation choking choking off contradiction contrary assertion contravention controversion counterbalancing countering countermand counterorder crossing defeasance denial deracination disaffirmation disallowance disavowal disclaimer disclamation disownment disproof economic self-sufficiency elimination eradication extermination extinction extinguishment extirpation forswearing free enterprise free trade frustration gainsaying governmentalism impugnment invalidation laissez-faire laissez-faireism line liquidation localism managed currency negation neutralization noninterference nonintervention offsetting party line party principle planned economy policy polity position price supports protection protectionism public policy pump-priming purge recall recantation refutation renege renunciation repeal repudiation rescinding rescindment rescission retractation retraction reversal revocation revoke revokement rooting out sectionalism setting aside silencing snuffing out stifling strangulation suffocation suppression suspension thwarting undoing uprooting vacation vacatur vitiation voidance voiding waiver waiving withdrawal write-off