nullification

the doing away with something by formal action an act aimed at curbing sedition that was perhaps the most serious attempt at nullification of freedom of the press in the nation's history Synonyms abatement, abolishment, abrogation, annulment, avoidance, cancellation (also cancelation), defeasance, dissolution, invalidation, negation, abolition, quashing, repeal, rescindment, voidingRelated Words abortion, calling off, recall; countermand, override, overruling, overturn, veto; retraction, reversal, revocation, suspension, withdrawal; banning, enjoining, forbiddance, outlawing, prohibition; disallowance, dismissal, rejection; elimination, eradication, erasure, liquidation, removalNear Antonyms enactment, legislation; establishment, founding, institution; formalization, legalization, legitimation, legitimization, validation; passing, ratification; approval, authorization, clearance, endorsement (also indorsement), permission, sanctioning; commandment, decreeing, mandating, ordering, prescription