unproven

adjective

un·​prov·​en ˌən-ˈprü-vən How to pronounce unproven (audio)
 British also  -ˈprō-
: not tested and shown to be good, true, or useful : not proven
an unproven allegation/theory
unproven benefits
unproven technology

Examples of unproven in a Sentence

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.
Goalkeeping concerns over Andre Onana and Altay Bayindir have perhaps been addressed with the addition of Senne Lammens, but the 23-year-old Belgian is relatively unproven at the highest level having made just 93 career appearances. Jack Bantock, New York Times, 4 Sep. 2025 The federal government said the firing was justified because the president determined there was sufficient cause, citing unproven allegations of mortgage fraud. Bryan Mena, CNN Money, 4 Sep. 2025 In the past 200 days, Kennedy has terminated mRNA-research grants, stuffed a CDC advisory panel with anti-vaccine activists, and propped up unproven treatments during a deadly measles outbreak. Nicholas Florko, The Atlantic, 4 Sep. 2025 While they have long been prescribed as standard treatment after a heart attack, their benefit in the context of modern treatments was unproven, with new drugs often tested but older treatments less rigorously questioned, according to the researchers. Hannah Millington, MSNBC Newsweek, 2 Sep. 2025 See All Example Sentences for unproven

Word History

First Known Use

1563, in the meaning defined above

Time Traveler
The first known use of unproven was in 1563

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Cite this Entry

“Unproven.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unproven. Accessed 10 Sep. 2025.

Legal Definition

unproven

adjective
un·​prov·​en
ˌən-ˈprü-vən
: not proven
an unproven allegation

More from Merriam-Webster on unproven

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