as in evidence
something presented in support of the truth or accuracy of a claim
the signature of a witness provides substantiation that a person's will is genuine
Synonyms & Similar Words
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Antonyms & Near Antonyms
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Recent Examples of substantiation
Some companies may have responded to an initial notice without all of the substantiation required.
—
Guinevere Moore, Forbes.com, 26 Jan. 2026
As with the seven other cases, the claim to have brought peace in Gaza lacks substantiation.
—Timothy Joseph, The Conversation, 21 Jan. 2026
Consequently, all three adverts were upheld as breaches of the CAP Code—more specifically, edition 12 of the primary framework for the rulings—and slapped with misleading advertising and lack of substantiation.
—Alexandra Harrell, Sourcing Journal, 3 Dec. 2025
Trump’s post did not include any substantiation for his claims.
—Alicia Wallace, CNN Money, 24 Aug. 2025
Guinevere Moore, Forbes.com, 26 Jan. 2026
As with the seven other cases, the claim to have brought peace in Gaza lacks substantiation.
—Timothy Joseph, The Conversation, 21 Jan. 2026
Consequently, all three adverts were upheld as breaches of the CAP Code—more specifically, edition 12 of the primary framework for the rulings—and slapped with misleading advertising and lack of substantiation.
—Alexandra Harrell, Sourcing Journal, 3 Dec. 2025
Trump’s post did not include any substantiation for his claims.
—Alicia Wallace, CNN Money, 24 Aug. 2025
Recent Examples of Synonyms for substantiation
Noun
-
Excavators working at a rugged eastern Oregon ranch recently uncovered evidence of Chinese immigrants working as cowboys — a role rarely associated with the American West.—
Andrea Margolis,
FOXNews.com,
30 Jan. 2026
-
Banfield's at-times tense testimony comes after his attorney scrutinized the county's investigation into the defendant, arguing that officials, almost since the beginning, forced a theory that the husband had catfished and killed his wife, and ignored evidence that undermined that conclusion.—
OLIVIA DIAZ THE ASSOCIATED PRESS,
Arkansas Online,
30 Jan. 2026
Noun
-
After years of building, the business becomes proof of competence and relevance.—
Lien De Pau,
Forbes.com,
29 Jan. 2026
-
So many warrants were indisputable proof that the shooter had been right to fear for his life.—
Literary Hub,
Literary Hub,
28 Jan. 2026
Noun
-
The federal probe appears to center on Powell's testimony to Congress last year about cost overruns in a multi-billion-dollar office renovation project.—
Max Zahn,
ABC News,
28 Jan. 2026
-
Some of these are interesting, too, as sort of raw testimony of a conference documenting the state of AI at the beginning of a landmark year.—
John Werner,
Forbes.com,
27 Jan. 2026
Noun
-
Follow up with clear documentation and updates so your efforts are visible but not boastful.—
Sho Dewan,
Forbes.com,
27 Jan. 2026
-
The foundation also did not provide the contract with the firm or any documentation of the expense.—
Paul Pringle,
Los Angeles Times,
27 Jan. 2026
Cite this Entry
“Substantiation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/substantiation. Accessed 1 Feb. 2026.
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