un·​prov·​en | \ˌən-ˈprü-vən, British also -ˈprō-\

Definition of unproven 

: 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

But the Longhorns are young in spots and unproven in others. Paul Myerberg, USA TODAY, "Oklahoma's still the team to beat in the Big 12," 9 July 2018 But after 90 straightforward, some might say dull, minutes of soccer on Saturday, England and its fans were awakened to this invigorating new reality: The team, young and until now unproven, is headed to its first World Cup semifinal since 1990. Andrew Keh, New York Times, "England Takes Another Step Toward Bringing ‘It’ Home," 8 July 2018 Now, the Stanford neuroscientist is embarking on a different kind of daring quest, testing an intriguing but unproven hypothesis: that virtual reality could be used to preserve or even restore vision for patients with glaucoma. Rebecca Robbins, STAT, "A daredevil researcher’s latest quest: to restore sight lost to glaucoma using virtual reality," 2 July 2018 That’s what separates the elites from the capable and the unproven. Omar Kelly, Sun-Sentinel.com, "Where does Dolphins' Ryan Tannehill rank among 2018 starting QBs? Elite? capable? Or unproven?," 26 June 2018 Reports in Cambodia media had said some images featured people under the age of 18, but one placard declared the allegation unproven. Washington Post, "Sacked US Embassy guards in Cambodia stage protest," 19 June 2018 The Oregon Ducks have an improving defense, a future NFL quarterback, a solid (mostly returning) offensive line and a stable of talented but unproven running backs. Andrew Nemec, OregonLive.com, "Tabari Hines, Ducks graduate transfer WR, explains Oregon's recruiting approach," 8 June 2018 Following Trump’s public, but as yet unproven, accusations in recent days that an FBI informant had been embedded in his campaign for political purposes, the scope of the investigation will be widened to address these allegations. Natasha Bach, Fortune, "Trump Demanded a Probe of Possible Campaign 'Infiltration.' The Justice Department Responded—Carefully," 21 May 2018 Consider the case of James McGuckin, who was the target of a Washington state investigation and an FDA letter into his use of a risky and unproven vein-opening procedure on people with multiple sclerosis. Milwaukee Journal Sentinel, "More than 200 doctors stay on Medicare rolls despite disciplinary actions," 17 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unproven.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unproven

1563, in the meaning defined above

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Statistics for unproven

Last Updated

30 Oct 2018

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Time Traveler for unproven

The first known use of unproven was in 1563

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More Definitions for unproven


un·​prov·​en | \ˌən-ˈprü-vən\

Legal Definition of unproven 

: not proven an unproven allegation

More from Merriam-Webster on unproven

Spanish Central: Translation of unproven

Comments on unproven

What made you want to look up unproven? Please tell us where you read or heard it (including the quote, if possible).


to express warning or disapproval

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