1
as in to prove
to gain full recognition or acceptance of substantiated his claim to local mountaineering fame with a photo of himself on the summit of Mount McKinley

Synonyms & Similar Words

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Antonyms & Near Antonyms

2
3
as in to embody
to represent in visible form the artist's intense feelings are substantiated by his paintings' bold colors and broad brush strokes

Synonyms & Similar Words

4
5
as in to reinforce
to provide evidence or information for (as a claim or idea) Darwin spent the rest of his life gathering evidence to substantiate his theory of the origin of species

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How does the verb substantiate contrast with its synonyms?

Some common synonyms of substantiate are authenticate, confirm, corroborate, validate, and verify. While all these words mean "to attest to the truth or validity of something," substantiate implies the offering of evidence that sustains the contention.

the claims have yet to be substantiated

When is authenticate a more appropriate choice than substantiate?

Although the words authenticate and substantiate have much in common, authenticate implies establishing genuineness by adducing legal or official documents or expert opinion.

handwriting experts authenticated the diaries

When might confirm be a better fit than substantiate?

The meanings of confirm and substantiate largely overlap; however, confirm implies the removing of doubts by an authoritative statement or indisputable fact.

confirmed the reports

In what contexts can corroborate take the place of substantiate?

While the synonyms corroborate and substantiate are close in meaning, corroborate suggests the strengthening of what is already partly established.

witnesses corroborated his story

When could validate be used to replace substantiate?

While in some cases nearly identical to substantiate, validate implies establishing validity by authoritative affirmation or by factual proof.

validated the hypothesis by experiments

When would verify be a good substitute for substantiate?

The words verify and substantiate can be used in similar contexts, but 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

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of substantiate He was initially stopped for reckless driving, though officials later said there was no evidence to substantiate the reckless driving claim. Cheyanne M. Daniels, The Hill, 7 May 2025 The claim that Iran attempted to assassinate Donald Trump is substantiated by criminal indictments, FBI investigations and intelligence briefings. Jesus Mesa, MSNBC Newsweek, 16 June 2025 Some of those claims were later substantiated by arrest records and news reports. Story Hinckley, Christian Science Monitor, 12 June 2025 This McKinsey study substantiates this and shows that developers can code twice as fast with generative AI. William Jones, USA Today, 10 June 2025 See All Example Sentences for substantiate
Recent Examples of Synonyms for substantiate
Verb
  • Both De Los Santos and Yom said research data on AI voice clones will likely follow a similar path, eventually proving that a fully functioning, natural-sounding voice can lead to not only a better life, but a longer one.
    April Dembosky, NPR, 22 July 2025
  • India’s Prime Day 2025 lineup, scheduled July 12-14, proved to be popular with Prime Video members globally.
    Naman Ramachandran, Variety, 22 July 2025
Verb
  • The crime drama follows a handwritten manuscript of Dante Alighieri’s Divine Comedy, which makes its way from the Vatican library to a mob boss in New York, who turns to writer and Dante expert Nick Tosches to verify its authenticity.
    Scott Roxborough, HollywoodReporter, 30 July 2025
  • Users who verify their humanness with an Orb can claim up to 39 Worldcoin crypto tokens, valued at approximately $45.
    Karoline Leonard, Austin American Statesman, 30 July 2025
Verb
  • Margaret Qualley is used to embodying larger than life characters on screen.
    Brittany Spanos, Rolling Stone, 24 July 2025
  • Van Persie’s bright but brief flame at United embodies the tension between short-term success and sustainable long-term performance that is at the heart of all transfer decisions.
    Conor O'Neill, New York Times, 24 July 2025
Verb
  • The plan is the department's effort to establish a clear vision while seeking community input to create a roadmap for the department over the next five years.
    Jade Jackson, IndyStar, 24 July 2025
  • Of course, what’s next is establishing just how replicable these results are across a fragmented industry with wildly varying business sizes, tech maturity, and customer bases.
    Josipa Majic Predin, Forbes.com, 23 July 2025
Verb
  • This response reinforces the narrative that has defined her post-WWE career.
    Andrew Ravens‎, MSNBC Newsweek, 24 July 2025
  • As governments and large enterprises modernize their finance systems, there’s growing momentum to move beyond simple cloud migration—to embed AI in ways that reinforce trust.
    Rahul Bhatia, Forbes.com, 24 July 2025
Verb
  • The new molecule can be injected into veins or muscles and has demonstrated its ability to cross the protective 'blood–brain barrier' and effectively reach receptors in brain cells.
    Health Reporter, MSNBC Newsweek, 24 July 2025
  • Various chores from the early days of life in Pea Ridge, including corn shelling, apple peeling, using a scrub board, letter stamping at the post office, lace making may be demonstrated.
    Annette Beard, Arkansas Online, 24 July 2025
Verb
  • Reid confirmed Tuesday that Moore had never played guard previously in his career.
    Jesse Newell, Kansas City Star, 30 July 2025
  • However, additional studies are necessary to fully confirm these findings.
    Cristina Mutchler, Verywell Health, 30 July 2025
Verb
  • A number of prominent politicians of both parties have expressed grief over the incident.
    Chad de Guzman, Time, 29 July 2025
  • This is an opinion and analysis article, and the views expressed by the author or authors are not necessarily those of Scientific American.
    Arthur Caplan & James Tabery, Scientific American, 28 July 2025

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Cite this Entry

“Substantiate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/substantiate. Accessed 4 Aug. 2025.

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