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 White House strategy makes the unsubstantiated claim that the populations of some European countries want an end to the war, but that their governments are subverting democratic processes and not delivering it.
—
Haley Ott, CBS News, 5 Dec. 2025
That’s been achieved through multiple policy changes, Maurice said, like relying on other staff to transport animals and setting standards to close out unsubstantiated complaints.
—Lucas Robinson, San Diego Union-Tribune, 1 Dec. 2025
However, the agency has typically gone after only those companies making unsubstantiated health claims or marketing their products to kids, Jonathan Havens, a cannabis attorney at the law firm Saul Ewing, told me.
—Nicholas Florko, The Atlantic, 21 Nov. 2025
The SARsfilings are required under the Bank Secrecy Act, and regulators warn on the actual bank forms that the reports are confidential and contain unsubstantiated allegations of possible criminal activity.
—Antonio Maria Delgado, Miami Herald, 7 Nov. 2025
See All Example Sentences for unsubstantiated
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Haley Ott, CBS News, 5 Dec. 2025
That’s been achieved through multiple policy changes, Maurice said, like relying on other staff to transport animals and setting standards to close out unsubstantiated complaints.
—Lucas Robinson, San Diego Union-Tribune, 1 Dec. 2025
However, the agency has typically gone after only those companies making unsubstantiated health claims or marketing their products to kids, Jonathan Havens, a cannabis attorney at the law firm Saul Ewing, told me.
—Nicholas Florko, The Atlantic, 21 Nov. 2025
The SARsfilings are required under the Bank Secrecy Act, and regulators warn on the actual bank forms that the reports are confidential and contain unsubstantiated allegations of possible criminal activity.
—Antonio Maria Delgado, Miami Herald, 7 Nov. 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 8 Dec. 2025.
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