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 64-year-old MAGA loyalist has consistently promoted unsubstantiated claims about the 2020 presidential election being rigged against President Trump.
—
Brian Niemietz, New York Daily News, 8 July 2025
Social media was running wild with videos and photos of Carrington’s fingers hitting Clark in the eye, with unsubstantiated claims and insinuations that Carrington had tried to injure Clark.
—Christine Brennan, CNN Money, 6 July 2025
One call on May 8, 2024, resulted in an endangerment charge being recommended, but it was found to be unsubstantiated, according to open data from the Chandler Police Department.
—Lauren De Young, AZCentral.com, 3 July 2025
President Donald Trump has rationalized this exceptional treatment by gesturing to unsubstantiated and debunked reports of racialized attacks.
—Time, 9 June 2025
See All Example Sentences for unsubstantiated
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Brian Niemietz, New York Daily News, 8 July 2025
Social media was running wild with videos and photos of Carrington’s fingers hitting Clark in the eye, with unsubstantiated claims and insinuations that Carrington had tried to injure Clark.
—Christine Brennan, CNN Money, 6 July 2025
One call on May 8, 2024, resulted in an endangerment charge being recommended, but it was found to be unsubstantiated, according to open data from the Chandler Police Department.
—Lauren De Young, AZCentral.com, 3 July 2025
President Donald Trump has rationalized this exceptional treatment by gesturing to unsubstantiated and debunked reports of racialized attacks.
—Time, 9 June 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 18 Jul. 2025.
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