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
Courts have consistently ruled that failure to comply with substantiation rules leads to disallowance, no matter how genuine the donation.
—
Matthew F. Erskine, Forbes.com, 9 Sep. 2025
Trump’s post did not include any substantiation for his claims.
—Alicia Wallace, CNN Money, 24 Aug. 2025
Matthew F. Erskine, Forbes.com, 9 Sep. 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
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In many cases, those determinations simply cannot be made until court cases begin, and evidence relating to the suspect's background and planning are publicly available.—
NPR,
NPR,
25 Oct. 2025
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Furthermore, when colonizers attempted to burn all evidence of Nkrumah’s time as a revolutionary leader, Hesse snuck his reels out of Ghana, and into a London vault, where the footage has spent decades inside, waiting to be digitized.—
Marcus Jones,
IndieWire,
25 Oct. 2025
Noun
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There isn’t as much proof as Tamra led everyone to believe.—
Brian Moylan,
Vulture,
31 Oct. 2025
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Specifically, the judge said that the proof-of-citizenship directive is unconstitutional, violating the separation of powers.—
Peter Aitken,
MSNBC Newsweek,
31 Oct. 2025
Noun
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According to forensic anthropologist Leslie Eisenberg's testimony at Avery's trial, Halbach's body was burned to the point that no complete bones remained, per the Journal Sentinel.—
Nicole Briese,
PEOPLE,
31 Oct. 2025
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Previous testimony from doctors on her care team revealed Zwerner’s injuries were life-threatening after a bullet narrowly missed her heart.—
Cindy Von Quednow,
CNN Money,
31 Oct. 2025
Noun
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Cargo is frequently conducted this way, moving from one port of call to another via air, land or sea before ending up at its final destination with all the proper documentation.—
Jasmin Malik Chua,
Sourcing Journal,
4 Nov. 2025
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Today’s ARMs come with strict documentation standards, borrower protections, and built-in caps designed to prevent the shock resets that hammered millions of families in the last crisis.—
Emma Burleigh,
Fortune,
4 Nov. 2025
Cite this Entry
“Substantiation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/substantiation. Accessed 8 Nov. 2025.
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