unsubstantiated
adjective
un·sub·stan·ti·at·ed
ˌən-səb-ˈstan(t)-shē-ˌā-təd 
: not proven to be true : not substantiated
an unsubstantiated rumor/report
a plausible but unsubstantiated theory
Examples of unsubstantiated in a Sentence
an unsubstantiated claim that was thrown out of court
Recent Examples on the Web
Experts advise looking for certifications, questioning unsubstantiated language and visuals, and conducting an online search for a product and company to learn about how goods are made and whether there is evidence for what the company says.
—
Riane Lumer, CNN Money, 7 Aug. 2025
In subsequent social media posts and in comments to reporters, Trump has made unsubstantiated claims about the BLS process for conducting and revising jobs reports and the political motivations of McEntarfer in order to benefit Democrats and undermine Republicans.
—Isabella Murray, ABC News, 5 Aug. 2025
However, many TikTokers thought that the tweet was unsubstantiated.
—Lea Veloso, StyleCaster, 29 July 2025
What’s more, sources familiar with the review told CNN the files appeared to include several unsubstantiated claims about Trump and others that the Justice Department found not to be credible.
—Cnn.com Wire Service, Mercury News, 25 July 2025
See All Example Sentences for unsubstantiated
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Riane Lumer, CNN Money, 7 Aug. 2025
In subsequent social media posts and in comments to reporters, Trump has made unsubstantiated claims about the BLS process for conducting and revising jobs reports and the political motivations of McEntarfer in order to benefit Democrats and undermine Republicans.
—Isabella Murray, ABC News, 5 Aug. 2025
However, many TikTokers thought that the tweet was unsubstantiated.
—Lea Veloso, StyleCaster, 29 July 2025
What’s more, sources familiar with the review told CNN the files appeared to include several unsubstantiated claims about Trump and others that the Justice Department found not to be credible.
—Cnn.com Wire Service, Mercury News, 25 July 2025
See All Example Sentences for unsubstantiated
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsubstantiated. Accessed 23 Aug. 2025.
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