sub·​stan·​ti·​ate | \ səb-ˈstan(t)-shē-ˌāt \
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 \ noun
substantiative \ səb-​ˈstan(t)-​shē-​ˌā-​tiv \ adjective

Synonyms & Antonyms for substantiate


demonstrate, establish, prove, show



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Choose the Right Synonym for substantiate

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

However, Huawei provides infrastructure and consumer devices to almost all of the US’ major allies, and the US is yet to substantiate its warnings. Sam Byford, The Verge, "China suggests Trump switch to Huawei after reports of iPhone tapping," 25 Oct. 2018 With people being aware and having somebody else substantiate it, that gives us a little bit more trust. John Benson,, "Parma City School District officials tout positive survey results," 16 Feb. 2018 The investigation, conducted by outside counsel, found insufficient evidence to substantiate allegations against Seacrest. Leah Prinzivalli, Glamour, "Why People Are Pissed Ryan Seacrest Wore a Time's Up Bracelet to the 2019 Golden Globes," 6 Jan. 2019 The Treasury Department’s inspector general examined some of them in an audit, and ultimately recommended internal changes but didn’t find evidence to substantiate claims of misconduct. Rebecca Davis O’brien, WSJ, "Treasury Official Accused of Leaks Is a Trump Supporter Who Feuded With Another Unit," 25 Oct. 2018 Until Saturday, the Saudis had insisted that Khashoggi left the consulate — a false narrative that would have been substantiated by someone who resembled him seen departing the building. Ben Hubbard, The Seattle Times, "Khashoggi double sent to create false trail in Istanbul, surveillance images show," 22 Oct. 2018 The investigation into Richardson and the Panthers organization concluded in June, finding evidence that substantiated claims of workplace misconduct by Richardson. Jourdan Rodrigue, charlotteobserver, "Sale of Panthers to David Tepper finalized. Here's what we know, and what's next," 9 July 2018 An investigation by Gibson Dunn, an independent law firm, substantiated some of the claims, according to two people briefed on the findings. New York Times, "At Uber, New Questions Arise About Executive Behavior," 13 July 2018 On May 17, the Office of Child Care substantiated the allegation about a child being tied up based on the photo. Brad Schmidt,, "Oregon failed to identify day care owner's checkered past before new allegations," 6 June 2018

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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Statistics for substantiate

Last Updated

10 Feb 2019

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Time Traveler for substantiate

The first known use of substantiate was in 1610

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English Language Learners Definition of substantiate

formal : to prove the truth of (something)

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