AskDefine | Define nullify

Dictionary Definition



1 declare invalid; "The contract was annulled"; "void a plea" [syn: invalidate, annul, quash, void, avoid] [ant: validate]
2 show to be invalid [syn: invalidate] [ant: validate]
3 make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts" [syn: neutralize, neutralise, negate] [also: nullified]

User Contributed Dictionary



null + -ify



  1. transitive law to make legally invalid; "The contract has been nullified." [syn: terminated]
  2. to prevent from happening


Extensive Definition

The process of nullification may refer to:
  • Declaring a law to be unconstitutional and have the chance to be nullified or invalidated
  • Declaring a law to be null or void in a jurisdiction, or refusing to enforce a law.
  • The legal theory that a U.S. State has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional.
  • Jury nullification, a legal term that refers to a jury's right to deliver a verdict in contradiction to written law.
  • Body nullification, the practice of removing body parts.
  • Physical nullification, a hypothesized process which results when ordinary mass/energy encounters "negative" mass/energy. Not to be confused with annihilation which involves anti-matter.

Nullification and attempts at nullification in the US

Synonyms, Antonyms and Related Words

abate, abjure, abolish, abrogate, absolve, annihilate, annul, assert the contrary, belie, bring to naught, bring to nothing, buffer, cancel, cancel out, come to nothing, compensate, confine, contest, contradict, contravene, controvert, counter, counteract, counterbalance, countermand, counterorder, countervail, cross, declare a moratorium, deny, disaffirm, disallow, disannul, disavow, disclaim, disown, disprove, dispute, do away with, forswear, frustrate, gainsay, impugn, invalidate, join issue upon, limit, make void, negate, negativate, negative, neutralize, not accept, not admit, obliterate, offset, oppose, override, overrule, quash, recall, recant, refuse to admit, refute, renege, renounce, repeal, repudiate, rescind, restrict, retract, reverse, revoke, set aside, stultify, suspend, take back, take issue with, thwart, undo, vacate, vitiate, void, waive, wipe out, withdraw, write off
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