Nullification

Noun

 * 1) The act of nullifying; a rendering void and of no effect, or of no legal effect.
 * 2) removal

Thesaurus
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