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 Kennedy claimed, among other things, that investigators lost that hair evidence, though the Greenwich police deny losing or destroying any evidence and Kennedy could never substantiate his allegation. Ryan D'agostino, Town & Country, "What is Robert Kennedy Jr. Fighting For?," 19 Oct. 2020 Republicans tied Hunter Biden to the account, but refused to share any documents that might substantiate that. Politifact Staff, Detroit Free Press, "Fact-checking the first 2020 presidential debate: Donald Trump vs. Joe Biden," 30 Sep. 2020 The committee, which released two reports Wednesday outlining their findings, did substantiate a number of incriminating tactics used by drug makers to jack up their prices, but those findings were hardly mentioned in the first hours of the hearing. Nicholas Florko, STAT, "‘You just got better at making money’: Democrats blast Celgene, Teva for price hikes detailed in internal documents," 30 Sep. 2020 The pressure on Mnuchin to substantiate his claim increased after Congress’s Joint Committee on Taxation concluded in late November that the legislation, while growing the economy somewhat, would still cost about $1 trillion. Jason Zengerle, New York Times, "Steven Mnuchin’s Deal Staved Off Catastrophe. Can He Make Another One?," 29 Sep. 2020 The post contained no links to substantiate the claim, but that didn’t stop it from being shared more than 50,000 times. Anna Staver, USA TODAY, "Fact check: Kroger employee uniform policy doesn't permit any political messaging," 24 Sep. 2020 At a minimum, companies must substantiate the claim that their profits are justified in order for society to continue to offer them patent protections that contribute to inequitable access. Nicole Hassoun, Fortune, "To ethically tackle COVID-19, Big Pharma needs an overhaul," 25 Sep. 2020 Downing gave no evidence to substantiate the claim. Kyle Hopkins And Michelle Theriault Boots, ProPublica, "The Woman Propositioned by Alaska’s Former Lieutenant Governor Tells Her Story for the First Time," 10 Sep. 2020 That Schiff cited said reporting to open his original investigation into the matter — and used it to substantiate his claim that Murphy lied to Congress — is apparently immaterial. Tobias Hoonhout, National Review, "Media Help Adam Schiff Rehabilitate the Image of His Latest Whistleblower," 11 Sep. 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

Time Traveler

The first known use of substantiate was in 1610

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Statistics for substantiate

Last Updated

25 Oct 2020

Cite this Entry

“Substantiate.” Dictionary, Merriam-Webster, Accessed 30 Oct. 2020.

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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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