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 Hertel said O'Neill's had nine formal complaints filed against him and three were substantiated by the South Bend Police Department. Christina Carrega, ABC News, "Former cop not charged for killing man still faces unrelated felony charges," 7 Mar. 2020 Both Thomas and Kavanaugh were accused by their political rivals of immoral behavior during their contentious confirmation hearings, though both claims were never substantiated. Andrew Mark Miller, Washington Examiner, "Omar attacks Kavanaugh and Thomas as 'two accused sexual predators'," 7 Mar. 2020 Walz’s analysis is that his primary returning players all got better, an opinion substantiated by the statistics. Tim Sullivan, The Courier-Journal, "Louisville women's basketball maintains standard without a transcendent star," 1 Mar. 2020 The school district concluded the allegation against Duhart was substantiated. Janelle Griffith, NBC News, "Florida teacher suspended for washing out student's mouth with hand sanitizer," 21 Feb. 2020 The school district concluded the allegation against Duhart was substantiated. Andrew Marra, USA TODAY, "Florida teacher suspended for washing out student’s mouth with hand sanitizer," 20 Feb. 2020 The allegations were investigated and substantiated by the state Department of Social Services, which oversees facilities like Edgewood. Taylor Kate Brown,, "Bay Briefing: Oakland police and racial bias — a new approach to curbing it," 18 Nov. 2019 In most cases, names are publicized only after an internal church review process determines that an allegation is substantiated. Elyssa Cherney,, "The Chicago Archdiocese does not publicly identify deceased priests accused of sexual abuse. Here’s why one suburban deacon is trying to change that.," 7 Oct. 2019 The company was unable to substantiate those links. Washington Post, "The Technology 202: Tech industry takes big stock hit from coronavirus spread," 25 Feb. 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

23 Mar 2020

Cite this Entry

“Substantiate.” Dictionary, Merriam-Webster, Accessed 4 Apr. 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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