invalidate

verb
in·​val·​i·​date | \ (ˌ)in-ˈva-lə-ˌdāt \
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 \ noun
invalidator \ in-​ˈva-​lə-​ˌdā-​tər \ 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

That's why the Department of Justice has filed a lawsuit yesterday against the state of California to invalidate these unjust laws and to immediately freeze their effect. sacbee, "Text of AG Sessions’ Sacramento speech | The Sacramento Bee," 7 Mar. 2018 Sewell’s bill, the Voting Rights Advancement Act, is designed to restore key provisions of the Voting Rights Act that were invalidated by the US Supreme Court’s 2013 Shelby v. Holder decision. Ella Nilsen, Vox, "This Democrat thinks voting rights should be one of the House’s first big priorities in January," 11 Dec. 2018 Benjamin believes that the ordinance — which was indeed invalidated, but not until after the marches — saved lives. NBC News, "'We don't have to accept the carnage': Towns take a stand on gun control," 2 July 2018 Misgendering purposefully attempts to invalidate and erase the transgender community. Dia Dipasupil, Teen Vogue, "It's Not Enough to Cast Transgender Models if You Won't Fight for Transgender People," 22 Oct. 2018 Dolan has also filed a federal civil rights lawsuit, which seeks to invalidate California’s death certificate. NBC News, "'They are not God': Mother of girl declared dead twice criticizes doctors," 9 July 2018 Denson is representing herself in both the original lawsuit and the lawsuit to invalidate the NDA. CBS News, "A third woman sues Donald Trump over non-disclosure agreement," 2 Apr. 2018 Again and again, they are told that vocal qualities and tics like higher pitch, upspeak, and vocal fry — which are usually associated with women — are worthy of condescension and invalidating to the speaker. Laura Hudson, The Verge, "Star Wars voice actress mocks Christine Blasey Ford’s voice during Kavanaugh testimony," 27 Sep. 2018 Sean Rayford/Getty Images States are kicking a growing number of voters off their rolls in the wake of a 2013 Supreme Court decision that invalidated a key part of the Voting Rights Act. Li Zhou, Vox, "The increase coincides with a Supreme Court decision on the Voting Rights Act, according to a new report.," 20 July 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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Last Updated

13 Jan 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 \
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 \

Legal Definition of invalidate

: to make or declare invalid

Other Words from invalidate

invalidation \ in-​ˌva-​lə-​ˈdā-​shən \ noun

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