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 Porter Wright is the firm that has been most involved in the Trump campaign’s efforts to invalidate the results in Pennsylvania, where Mr. Biden beat Mr. Trump by more than 50,000 votes. Rachel Abrams, New York Times, "Once Loyal to Trump, Law Firms Pull Back From His Election Fight," 13 Nov. 2020 The hotel industry is asking that the court declare the legislation unconstitutional and invalidate it. Lori Weisberg, San Diego Union-Tribune, "San Diego hotels sue city over rehiring ordinance they claim is unconstitutional," 6 Nov. 2020 There should be no attempts to denigrate or invalidate the legitimate and transparent counting, or recounting, of ballots. Milwaukee Journal Sentinel, "Opinion: The presidential election is over. Stay calm, and let the count carry on.," 5 Nov. 2020 The Trump campaign and Republican allies in the state Legislature have called on the U.S. Supreme Court to reverse that ruling and invalidate any mail ballot not received before polls closed on Tuesday. Michael Finnegan, Los Angeles Times, "Biden gains ground in Pennsylvania as Trump tries to stop the ballot count," 4 Nov. 2020 The lawsuit asked a judge to invalidate votes cast at the drive-thru sites. Graham Kates, CBS News, "Federal judge rejects latest attempt to block nearly 127,000 drive-thru votes in Texas," 2 Nov. 2020 Similar to the early vote option, officials will check to make sure your mail-in ballot was not submitted and accepted, invalidate it and give you a fresh ballot to cast. Staff Report Star Tribune, Star Tribune, "What to do if you haven't sent back your Minnesota absentee ballot," 30 Oct. 2020 At the one end, the court could agree and invalidate the whole thing. The Atlantic, "Listen: Is COVID-19 a Preexisting Condition?," 16 Oct. 2020 In other words, the court can’t merely invalidate the individual mandate, but must toss out the entire ACA. Michael Hiltzik, Los Angeles Times, "Column: The Supreme Court Obamacare case centers on technicalities, but much more is at stake," 10 Nov. 2020

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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Time Traveler for invalidate

Time Traveler

The first known use of invalidate was in 1649

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Statistics for invalidate

Last Updated

26 Nov 2020

Cite this Entry

“Invalidate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/invalidate. Accessed 28 Nov. 2020.

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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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Comments on invalidate

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