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 substantiate (audio) \ noun
substantiative \ səb-​ˈstan(t)-​shē-​ˌā-​tiv How to pronounce substantiate (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 post did not provide evidence to substantiate the claim. Rick Rouan, USA TODAY, "Fact check: No evidence Colorado shooting suspect entered country, bought gun, illegally," 24 Mar. 2021 There is no evidence to substantiate those claims, and the Trump administration and campaign distanced themselves from the attorney as a result of her fraud campaign. Alison Durkee, Forbes, "Sidney Powell’s Remaining ‘Kracken’ Cases Thrown Out By Supreme Court," 1 Mar. 2021 The author, a journalist and historian from Lansing, barely bothers to substantiate that claim, but his chronicle of the strike is compelling. Roger Lowenstein, WSJ, "‘Midnight in Vehicle City’ Review: How Labor Got Its Horsepower," 24 Jan. 2021 But given that an employer sets the terms of employment, that individual would need to request — and substantiate their need for — a reasonable accommodation under the law. Megan Cerullo, CBS News, "Can your employer force you to get a COVID-19 vaccine? Yes (usually)," 6 Dec. 2020 Six of the 11 complaints resulted in no consequences, either because managers couldn’t substantiate the allegations after reviewing the record or the issues raised were matters to be decided in the appeals process. Tal Kopan, San Francisco Chronicle, "Bad conduct, leering ‘jokes’ — immigration judges stay on bench," 22 Jan. 2021 There is, of course, no evidence to date to substantiate these widespread claims of voter fraud, with even establishment Republicans beginning to turn their backs on the Trump administration’s efforts to invalidate the election. Asia Ewart,, "Reminder: Trump Once Accused A Thanksgiving Turkey Of Refusing To Concede," 23 Nov. 2020 The Post criticized Trump for undermining the election results long after his legal team found nothing to substantiate widespread election fraud that would have tipped the scales in Biden's favor. David Goldman, CNN, "New York Post to Donald Trump: Stop the insanity," 28 Dec. 2020 The owners then provided free transportation and covered co-payments to further substantiate their fraudulent Medicare claims. Alison Medley, Chron, "Houston home healthcare owners charged for billing $10M in phony Medicare claims in kickback scheme," 16 Dec. 2020

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

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The first known use of substantiate was in 1610

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Statistics for substantiate

Last Updated

5 Apr 2021

Cite this Entry

“Substantiate.” Dictionary, Merriam-Webster, Accessed 17 Apr. 2021.

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More Definitions for substantiate



English Language Learners Definition of substantiate

formal : to prove the truth of (something)

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