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
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Recent Examples of substantiation
Companies that lack a clear understanding of the FTC’s strict substantiation requirements may adopt such claims prematurely, increasing their exposure to enforcement.
—
Alexandra Harrell, Sourcing Journal, 17 Mar. 2026
The smear sites have alleged, without substantiation, that targets engaged in — among other activities — extortion, embezzlement, prostitution, drug dealing and human trafficking.
—Gary Baum, HollywoodReporter, 11 Feb. 2026
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
Trump’s post did not include any substantiation for his claims.
—Alicia Wallace, CNN Money, 24 Aug. 2025
Alexandra Harrell, Sourcing Journal, 17 Mar. 2026
The smear sites have alleged, without substantiation, that targets engaged in — among other activities — extortion, embezzlement, prostitution, drug dealing and human trafficking.
—Gary Baum, HollywoodReporter, 11 Feb. 2026
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
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
-
Affidavit details alleged confession, evidence disposal The affidavit outlines statements from a witness who told detectives Stephen Bowen admitted to shooting his wife multiple times with a shotgun the night before and then sleeping downstairs.—
Sergio Candido,
CBS News,
2 Apr. 2026
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But these claims remained unverified without any concrete scientific evidence—until now.—
Andrew Paul,
Popular Science,
2 Apr. 2026
Noun
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The Inspector General closed the final investigation in 2022, saying there was no proof Hernandez had misused her position, engaged in conflicts of interest or accepted financial incentives.—
Carol Marbin Miller,
Miami Herald,
2 Apr. 2026
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This is yet more proof that Iran can never be trusted with nuclear weapons.—
James Powel,
USA Today,
2 Apr. 2026
Noun
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Defense attorneys who represent a man who is to go to trial in Tarrant County in seven days in the strangling of a 7-year-old girl are looking ahead to the scope of testimony in the punishment phase of the death penalty case if he is found guilty.—
Emerson Clarridge
Updated March 31,
Fort Worth Star-Telegram,
1 Apr. 2026
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Jurors were later instructed to disregard large portions of the girl’s testimony, which the appellate panel said was likely confusing to the jury.—
Teri Figueroa,
San Diego Union-Tribune,
31 Mar. 2026
Noun
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These laws generally require manufacturers to make repair tools, replacement parts, and documentation, including some software code, available to consumers and independent repair shops on fair and reasonable terms.—
Jasna Hodžić,
Big Think,
31 Mar. 2026
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And the order also comes as Trump pressures Republicans in Congress to pass the SAVE America Act, a sweeping election overhaul that would impose new voter identification and documentation requirements.—
Ashley Lopez,
NPR,
31 Mar. 2026
Cite this Entry
“Substantiation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/substantiation. Accessed 5 Apr. 2026.
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