invalidate

verb
in·​val·​i·​date | \ (ˌ)in-ˈva-lə-ˌdāt How to pronounce invalidate (audio) \
invalidated; invalidating; invalidates

Definition of invalidate

transitive verb

: to make invalid especially : to weaken or destroy the cogency of

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Other Words from invalidate

invalidation \ (ˌ)in-​ˌva-​lə-​ˈdā-​shən How to pronounce invalidation (audio) \ noun
invalidator \ in-​ˈva-​lə-​ˌdā-​tər How to pronounce invalidator (audio) \ noun

Choose the Right Synonym for invalidate

nullify, negate, annul, abrogate, invalidate mean to deprive of effective or continued existence. nullify implies counteracting completely the force, effectiveness, or value of something. a penalty nullified the touchdown negate implies the destruction or canceling out of each of two things by the other. the arguments negate each other annul suggests making ineffective or nonexistent often by legal or official action. the treaty annuls all previous agreements abrogate is like annul but more definitely implies a legal or official act. a law to abrogate trading privileges invalidate implies making something powerless or unacceptable by declaration of its logical or moral or legal unsoundness. the court invalidated the statute

Examples of invalidate in a Sentence

actions that will invalidate the contract The study invalidates earlier theories. factors that may invalidate the test results
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Recent Examples on the Web

By contrast, the court has invalidated many districts because of racial gerrymandering over the past 50 years. Gary D. Robertson, The Seattle Times, "A more skeptical Supreme Court to hear redistricting challenge," 25 Mar. 2019 The court had invalidated a provision of federal law that required the mandatory deportation of certain immigrants. CNN, "Gorsuch comes through for Trump and big business," 21 May 2018 The justices have never invalidated a voting district because of an unconstitutional partisan gerrymander. Bill Mears, Fox News, "All eyes on Justice Kennedy as Supreme Court hears another 'partisan' gerrymandering case," 28 Mar. 2018 Courts have invalidated similar laws in Texas, Maryland, and New York, and if NIFLA wins the case, California will no longer be able to enforce the law. Amanda Arnold, The Cut, "Everything to Know About the Supreme Court Case on Fake Women’s Health Centers," 18 Mar. 2018 Three-judge federal panels have already invalidated the district maps for the Wisconsin State Assembly and North Carolina’s congressional map, saying they are unconstitutionally tilted toward one party — in both cases, the Republicans. Michael Wines And Trip Gabriel, New York Times, "Pennsylvania Congressional District Map Is Ruled Unconstitutional," 22 Jan. 2018 But Trump administration officials are taking steps to invalidate the Affordable Care Act, including a move this week to help scuttle the law through the courts. ... Kristina Peterson, WSJ, "White House, Congressional GOP at Odds Over 2020 Health-Care Message," 27 Mar. 2019 Because the insurance mandate was central to the law, the whole law must be invalidated, the judge ruled. Stephanie Armour, WSJ, "States Ask for Clarity on Judge’s Ruling on Affordable Care Act," 17 Dec. 2018 Three previous versions of Washington’s death penalty were invalidated under Supreme Court rulings, but the state revised and revived the punishment each time. Lewis Kamb, The Seattle Times, "Death penalty struck down by Washington Supreme Court, taking 8 men off death row," 12 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invalidate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of invalidate

1649, in the meaning defined above

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Statistics for invalidate

Last Updated

21 Apr 2019

Look-up Popularity

Time Traveler for invalidate

The first known use of invalidate was in 1649

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More Definitions for invalidate

invalidate

verb

English Language Learners Definition of invalidate

: to weaken or destroy the effect of (something)
: to show or prove (something) to be false or incorrect

invalidate

verb
in·​val·​i·​date | \ in-ˈva-lə-ˌdāt How to pronounce invalidate (audio) \
invalidated; invalidating

Kids Definition of invalidate

: to weaken or destroy the effect of The phony signature invalidated the contract.

invalidate

transitive verb
in·​val·​i·​date | \ in-ˈva-lə-ˌdāt How to pronounce invalidate (audio) \

Legal Definition of invalidate

: to make or declare invalid

Other Words from invalidate

invalidation \ in-​ˌva-​lə-​ˈdā-​shən How to pronounce invalidation (audio) \ noun

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