sub·​stan·​ti·​ate | \ səb-ˈstan(t)-shē-ˌāt How to pronounce substantiate (audio) \
substantiated; substantiating

Definition of substantiate

transitive verb

1 : to give substance or form to : embody
2 : to establish by proof or competent evidence : verify substantiate a charge

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Other Words from substantiate

substantiation \ səb-​ˌstan(t)-​shē-​ˈā-​shən How to pronounce substantiation (audio) \ noun
substantiative \ səb-​ˈstan(t)-​shē-​ˌā-​tiv How to pronounce substantiative (audio) \ adjective

Synonyms & Antonyms for substantiate



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confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact. confirmed the reports corroborate suggests the strengthening of what is already partly established. witnesses corroborated his story substantiate implies the offering of evidence that sustains the contention. the claims have yet to be substantiated verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at. all statements of fact in the article have been verified authenticate implies establishing genuineness by adducing legal or official documents or expert opinion. handwriting experts authenticated the diaries validate implies establishing validity by authoritative affirmation or by factual proof. validated the hypothesis by experiments

Examples of substantiate in a Sentence

substantiated his claim to local mountaineering fame with a photo of himself on the summit of Mount McKinley Mr. MacGregor couldn't substantiate that it was Peter, and not some other rabbit, in the cabbage patch.
Recent Examples on the Web The decline of big bug releases in the late 1960s substantiates both theories, but Tsuitsui’s argument lays the groundwork for the next wave of natural horror movies that hit cinemas in the 1970s. Elizabeth Horkley, Quartz, "Our obsession with insects in horror films says a lot about our fear of destroying the planet," 30 Oct. 2019 As pediatrician Aaron Carroll notes today in The New York Times, researchers haven't been able to substantiate a single case when a child was seriously injured—let alone killed—by Halloween treats made hazardous by strangers. Beth Mole, Ars Technica, "Forget poisoned candy and razor blades. Here’s the real Halloween horror," 28 Oct. 2019 The intelligence community has not substantiated the claim. Shani Benezra, CBS News, "This week on "Face the Nation", October 20, 2019: Himes, Hurd," 18 Oct. 2019 The Bidens got rich, and that is substantiated, while America got robbed,’’ Trump said., "MINNEAPOLIS — President Trump was defiant in the face of an impeachment probe as he sought to convert the threat to his presidency into a weapon on the campaign trail, with biting and unsupported attacks on former vice president and Democratic presidential candidate Joe Biden.," 11 Oct. 2019 Giuliani's primary allegation - that Joe Biden pushed for the firing of Ukraine's top prosecutor to quash a probe into the former minister and Burisma owner Mykola Zlochevsky - has not been substantiated. Author: Paul Sonne, Michael Kranish, Matt Viser, Anchorage Daily News, "The Ukrainian gas tycoon and the vice president’s son," 29 Sep. 2019 None of the allegations against Biden or his son Hunter, who worked for a Ukrainian gas company, have been substantiated. Brian Slodysko, San Diego Union-Tribune, "Trump raises $13M after Pelosi announces impeachment inquiry," 26 Sep. 2019 In addition to alleged differences over Scientology, there also were reports, never substantiated, that Cruise exercised undue influence over her film choices, E! Martha Ross, The Mercury News, "From Tom Cruise to Jamie Foxx: Katie Holmes and the hazards of charismatic men," 21 Aug. 2019 After a thorough & exhaustive search, #rcmpmb has not been able to substantiate the tip in York Landing. Washington Post, "‘Lock your doors:’ Canada police hunt teen slaying suspects," 29 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'substantiate.' 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 substantiate

1610, in the meaning defined at sense 1

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Time Traveler for substantiate

Time Traveler

The first known use of substantiate was in 1610

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Statistics for substantiate

Last Updated

17 Nov 2019

Cite this Entry

“Substantiate.” The Dictionary, Merriam-Webster Inc., Accessed 21 November 2019.

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More Definitions for substantiate


How to pronounce substantiate (audio)

English Language Learners Definition of substantiate

formal : to prove the truth of (something)

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