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invalidate

verb

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

transitive verb

: to make invalid
especially : to weaken or destroy the cogency of
invalidation
(ˌ)in-ˌva-lə-ˈdā-shən How to pronounce invalidate (audio)
noun
invalidator
in-ˈva-lə-ˌdā-tər How to pronounce invalidate (audio)
noun

Synonyms

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

Example Sentences

actions that will invalidate the contract The study invalidates earlier theories. factors that may invalidate the test results
Recent Examples on the Web The ruling governs future elections, however, and does not invalidate votes cast via dropbox as Trump contends. Molly Beck, Journal Sentinel, 21 July 2022 Again the Court turned to history, this time not to deny a right but to invalidate long-standing and eminently reasonable efforts to protect public safety. David Cole, The New York Review of Books, 8 July 2022 At the same time, a more enjoyable product shouldn’t erase or invalidate what older generations achieved during their playing days. Shane Young, Forbes, 25 June 2022 The Freedom Foundation, an organization focused on limiting government powers, asked the Oregon Court of Appeals in July 2020 to temporarily invalidate masking rules as the court delved further into the legalities of the order. oregonlive, 29 Sep. 2021 The campaign first asked U.S. District Judge Leigh May in Atlanta to invalidate the subpoena. Dan Klepal, ajc, 30 June 2021 Of them, the Trump campaign asked to invalidate only the 28,000 ballots cast in the heavily Democratic Milwaukee and Dane counties. Deanna Paul, WSJ, 14 Dec. 2020 The same court declined to take up a lawsuit brought shortly after the 2020 election that sought to invalidate those results because of the use of drop boxes. Timothy Bella And Patrick Marley, Anchorage Daily News, 20 July 2022 But the Trump campaign still filed a lawsuit with the U.S. District Court in Albuquerque that sought to invalidate absentee ballots cast at drop boxes and halt the certification of New Mexico’s presidential electors. From Usa Today Network And Wire Reports, USA TODAY, 4 July 2022 See More

Word History

First Known Use

1649, in the meaning defined above

Time Traveler
The first known use of invalidate was in 1649

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