unproven

adjective

un·​prov·​en ˌən-ˈprü-vən How to pronounce unproven (audio)
British also -ˈprō-
Synonyms of unprovennext
: 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.
Whether this approach delivers measurable fitness results remains unproven. Jackie Snow, Los Angeles Times, 14 Jan. 2026 LaFleur deserves credit for leading the transition from four-time MVP Aaron Rodgers to the previously unproven Jordan Love, but an early exit from this year’s playoff field will show how long of a leash that test gave him. Jayna Bardahl, New York Times, 10 Jan. 2026 His young quarterback was promising but unproven. Hannah Keyser, CNN Money, 10 Jan. 2026 The shift could eliminate the need for exotic, unproven optical packages designed simply to replace a short-reach cable. Christopher McFadden, Interesting Engineering, 9 Jan. 2026 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 18 Jan. 2026.

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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