unsubstantiated

adjective

un·​sub·​stan·​ti·​at·​ed ˌən-səb-ˈstan(t)-shē-ˌā-təd How to pronounce unsubstantiated (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The lawsuit alleges that NewsNation did not verify Burgess' statements, amplifying unsubstantiated claims to millions of viewers. Raul A. Reyes, Newsweek, 23 Jan. 2025 The producers failed to provide sufficient time or details for his representatives to address unsubstantiated claims, many from unidentified participants whose allegations lack context. Etan Vlessing, The Hollywood Reporter, 23 Jan. 2025 Many have gone so far in their opposition to make unsubstantiated claims that the law would empower child predators to give genital examinations to young girls. Jackson Thompson, Fox News, 22 Jan. 2025 Fauci, the face of the nation’s pandemic response, was criticized by Trump and his allies for efforts to refute Trump’s unsubstantiated claims about the virus and urging Americans to be vaccinated. Ella Lee, The Hill, 20 Jan. 2025 See all Example Sentences for unsubstantiated 

Word History

First Known Use

circa 1775, in the meaning defined above

Time Traveler
The first known use of unsubstantiated was circa 1775

Dictionary Entries Near unsubstantiated

Cite this Entry

“Unsubstantiated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsubstantiated. Accessed 29 Jan. 2025.

More from Merriam-Webster on unsubstantiated

Last Updated: - Updated example sentences
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