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 Last November, a Dutch court invalidated a European patent for teff flour, a staple grain that’s used in Ethiopia’s injera bread. Brian Browdie, Quartz Africa, "South Africa’s Khoisan community will finally get a share of the commercialization of rooibos," 5 Nov. 2019 The court has struck down advertising rules in the pharmaceutical market, invalidated state limits on the sale of medical information, and overruled mandatory employee fees to fund the unions that represent public employees in collective bargaining. John Fabian Witt, The New Republic, "The Shrinking Legacy of a Supreme Court Justice," 1 Oct. 2019 Tops on the list in this week’s episode is the Ohio Supreme Court dealing a fatal blow to Cleveland’s Fannie Lewis law, which the city saw as an effective tool to fight poverty, but state lawmakers sought to invalidate. Jeremy Pelzer, cleveland, "Is Jim Renacci gearing up to run for Ohio governor again? Capitol Letter," 27 Sep. 2019 The small intrinsic biases don’t invalidate the thousands of regions of DNA such studies have already implicated in diseases and other conditions and traits. Quanta Magazine, "New Turmoil Over Predicting the Effects of Genes," 23 Apr. 2019 Justice Kennedy was the one conservative on the court who had signaled a willingness to invalidate an electoral map as too partisan if the right case came along. Jess Bravin, WSJ, "Supreme Court Again to Consider Partisan Gerrymandering," 4 Jan. 2019 The case reached the Supreme Court after Paxton appealed a federal court panel’s decision last year to invalidate the maps in two congressional districts and nine state House districts. Jasper Scherer, San Antonio Express-News, "LULAC convention-goers tackle redistricting concerns," 1 June 2018 The reason: On Oct. 22, 1685 — a few weeks before Locke began composing his Letter — Louis XIV invalidated the Edict of Nantes. Joseph Loconte, National Review, "The Need for a Revival of Lockean Liberalism," 11 Sep. 2019 Morrison invalidated the lie, which taints our minds especially, that our people are either one way or the other. Doreen St. Félix, The New Yorker, "Toni Morrison and What Our Mothers Couldn’t Say," 7 Aug. 2019

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

17 Nov 2019

Time Traveler for invalidate

The first known use of invalidate was in 1649

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More Definitions for invalidate

invalidate

verb
How to pronounce invalidate (audio)

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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