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
The plans must include specific actions to allow unsubstantiated claims to be dismissed quickly.
—
Ellen Mitchell, The Hill, 25 Apr. 2025
Since people have spotted the military flights, some took to online groups and shared unsubstantiated claims about the purpose of the training.
—Kendrick Calfee, Kansas City Star, 9 Apr. 2025
There are claims that omega-3 supplements may interact with blood thinners, but these are largely unsubstantiated.
—Melissa Nieves, Verywell Health, 18 Mar. 2025
Both have made unsubstantiated claims that the Biden administration held up the flight back to Earth for political reasons.
—Denise Chow, NBC News, 18 Mar. 2025
See All Example Sentences for unsubstantiated
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Ellen Mitchell, The Hill, 25 Apr. 2025
Since people have spotted the military flights, some took to online groups and shared unsubstantiated claims about the purpose of the training.
—Kendrick Calfee, Kansas City Star, 9 Apr. 2025
There are claims that omega-3 supplements may interact with blood thinners, but these are largely unsubstantiated.
—Melissa Nieves, Verywell Health, 18 Mar. 2025
Both have made unsubstantiated claims that the Biden administration held up the flight back to Earth for political reasons.
—Denise Chow, NBC News, 18 Mar. 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 2 May. 2025.
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