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
For the past week, President Donald Trump and Elon Musk have repeatedly pushed unsubstantiated claims that dead Americans listed as 150 or older are receiving Social Security payments.
—
Joey Garrison, USA TODAY, 21 Feb. 2025
No, thank goodness, though the plot clearly has roots in the Satanic panic of the '80s and '90s, when the U.S. media proliferated unsubstantiated reports of Satanic rituals and abuse.
—Randall Colburn, EW.com, 19 Feb. 2025
Although the canal was transferred to Panama in 1999 via the Panama Canal Treaty and Neutrality Treaty, President Trump believes the country violated the dual treaties under unsubstantiated claims that China still controls the waterway.
—Glenn Taylor, Sourcing Journal, 8 Feb. 2025
That’s not an unsubstantiated claim, as Historic Automobile Group International (HAGI) now tracks the entire marketplace with a number of indices on different areas of the marketplace.
—Mike Hanlon, New Atlas, 3 Feb. 2025
See All Example Sentences for unsubstantiated
Joey Garrison, USA TODAY, 21 Feb. 2025
No, thank goodness, though the plot clearly has roots in the Satanic panic of the '80s and '90s, when the U.S. media proliferated unsubstantiated reports of Satanic rituals and abuse.
—Randall Colburn, EW.com, 19 Feb. 2025
Although the canal was transferred to Panama in 1999 via the Panama Canal Treaty and Neutrality Treaty, President Trump believes the country violated the dual treaties under unsubstantiated claims that China still controls the waterway.
—Glenn Taylor, Sourcing Journal, 8 Feb. 2025
That’s not an unsubstantiated claim, as Historic Automobile Group International (HAGI) now tracks the entire marketplace with a number of indices on different areas of the marketplace.
—Mike Hanlon, New Atlas, 3 Feb. 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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But the comparison of the former Pac-12 to the new Pac-12 isn’t unreasonable, either.—
Jon Wilner,
The Mercury News,
3 Mar. 2025
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Reasons to hire Gen Z include their focus on balance and staying grounded—which have the benefit of reducing burnout or unreasonable expectations.—
Tracy Brower,
Forbes,
2 Mar. 2025
Adjective
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Sheriff’s officials said a report of a suspicious package at the Encinitas transit center early Thursday turned out to be unfounded.—
Karen Kucher,
San Diego Union-Tribune,
6 Mar. 2025
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During the 2024 presidential election, Trump doubled down on unfounded claims that Haitians were eating cats and dogs in Springfield, Ohio.—
Syra Ortiz Blanes,
Miami Herald,
4 Mar. 2025
Adjective
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Nearly one in two employees have reported experiencing burnout in the past year, and employees with unsupported mental health issues are more likely to call out sick or manage chronic health issues.—
Marcy Klipfel,
Forbes,
26 Feb. 2025
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Ji inaccurately cited the paper on his blog as evidence for his unsupported theory.—
Brandy Zadrozny,
NBC News,
25 Feb. 2025
Articles Related to unsubstantiated
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 13 Mar. 2025.
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