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

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 De Oreo's lawsuit also claims the diocese investigated the allegations in each letter and found no evidence to substantiate them. Mj Slaby, The Indianapolis Star, 19 Apr. 2022 Frito-Lay denied the rumor, and USA TODAY could find no other evidence to substantiate it. Nayeli Lomeli, USA TODAY, 21 Apr. 2020 In recent months, as platforms like Gettr and Truth Social have come online and expanded, the universe of users has grown — though that growth has been uneven and difficult to substantiate independently, experts said. New York Times, 30 Apr. 2022 Similar reviews and audits in other states including Georgia and Arizona have also failed to substantiate claims about widespread election fraud. Will Steakin, ABC News, 11 Apr. 2022 Cohen said Trump gave the statements to Deutsche Bank to inquire about a loan to buy the NFL’s Buffalo Bills and to Forbes magazine to substantiate his claim to a spot on its list of the world’s wealthiest people. Michael R. Sisak,, 15 Feb. 2022 Cohen said Trump gave the statements to Deutsche Bank to inquire about a loan to buy the NFL’s Buffalo Bills and to Forbes magazine to substantiate his claim to a spot on its list of the world’s wealthiest people. Michael R. Sisak, Anchorage Daily News, 15 Feb. 2022 The pictures have circulated in the open-source intelligence community, which collects and attempts to substantiate images and video and has been particularly active around the war in Ukraine. NBC News, 18 Apr. 2022 That led me to wonder if there was any research to substantiate my feeling that humility is a trait that many successful leaders have and which can bring out the best in people. Jason Richmond, Forbes, 25 Mar. 2022 See More

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.

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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Dictionary Entries Near substantiate

substantia nigra



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Statistics for substantiate

Last Updated

23 May 2022

Cite this Entry

“Substantiate.” Dictionary, Merriam-Webster, Accessed 26 May. 2022.

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More from Merriam-Webster on substantiate

Nglish: Translation of substantiate for Spanish Speakers

Britannica English: Translation of substantiate for Arabic Speakers


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