as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Recent Examples of unsubstantiated
There have been rumors occasionally that the Monfort brothers might sell the team, but those rumors are unsubstantiated.
—
Patrick Saunders, Denver Post, 16 Apr. 2025
The reputational value of saying the right thing has flipped; the cost of failing to deliver is now higher than the benefit of making bold but unsubstantiated promises.
—Rob Kaplan, Forbes.com, 29 Apr. 2025
Cohn played a central role in directing its investigations, many of which relied on unsubstantiated or misleading claims.
—Kenneth Obel, Chicago Tribune, 23 Apr. 2025
Adding another layer to the already shocking discoveries, the raid report also revealed that someone made an unsubstantiated claim that the MDMA had been mixed into alcoholic drinks and served to females at the home.
—Amber Corrine, VIBE.com, 22 Apr. 2025
See All Example Sentences for unsubstantiated
Patrick Saunders, Denver Post, 16 Apr. 2025
The reputational value of saying the right thing has flipped; the cost of failing to deliver is now higher than the benefit of making bold but unsubstantiated promises.
—Rob Kaplan, Forbes.com, 29 Apr. 2025
Cohn played a central role in directing its investigations, many of which relied on unsubstantiated or misleading claims.
—Kenneth Obel, Chicago Tribune, 23 Apr. 2025
Adding another layer to the already shocking discoveries, the raid report also revealed that someone made an unsubstantiated claim that the MDMA had been mixed into alcoholic drinks and served to females at the home.
—Amber Corrine, VIBE.com, 22 Apr. 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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At this juncture, a 10-7 regular season record isn’t unreasonable.—
Charley Walters,
Twin Cities,
25 May 2025
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Are my feelings unreasonable? – Mother-of-the-Groom Gloom Dear Mother: Your feelings are completely reasonable.—
R. Eric Thomas,
Mercury News,
23 May 2025
Adjective
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However, kidney and urology experts say this fear is unfounded.—
Caitlin Pagán,
Verywell Health,
30 May 2025
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South Africa has categorically denied the allegations and the country's Ministry of International Relations and Cooperation told its American counterparts earlier this month that the claims were unfounded.—
Sonam Sheth,
MSNBC Newsweek,
21 May 2025
Adjective
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But the water had gone down, leaving an unsupported shelf of thin ice along the bank, and snow had drifted over the shelf, hiding it.—
Ted Updike,
Outdoor Life,
22 May 2025
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Code written even five years ago may rely on deprecated dependencies or unsupported services.—
Rob Versaw,
Forbes.com,
22 May 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 4 Jun. 2025.
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