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

Recent Examples on the Web The protocols of citation must be observed, ad-hominem arguments are not tolerated, unsubstantiated claims are dismissed, and so on. Louis Menand, The New Yorker, 29 Apr. 2024 Nor does the TikTok disinformation cycle have any shortage of controversial or unsubstantiated beauty fads and nutritional claims. Danielle Sinay, Glamour, 5 Apr. 2024 See all Example Sentences for unsubstantiated 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'unsubstantiated.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 6 May. 2024.

More from Merriam-Webster on unsubstantiated

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