un·​prov·​en | \ ˌən-ˈprü-vən How to pronounce unproven (audio) , 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

Now, the former JPMorgan Chase & Co. executive is focusing on another potentially transformative but unproven idea: blockchain, the technology underpinning bitcoin. David Lazarus, latimes.com, "California Inc.: TV networks, eyeing big bucks, lay out prime-time plans for advertisers," 14 May 2018 The disclosure highlights the numerous uncertainties around the business model, which is unproven to say the least. Faiz Siddiqui, The Seattle Times, "As it gets set for IPO, Lyft outlines all the reasons ride-sharing could fail," 25 Mar. 2019 The bun is black from the charcoal baked into the batter-a popular, if medically unproven, health craze-and a bit spongier. Lucas Shaw, The Seattle Times, "From pig-shaped bao to ‘Pac Man’ dumplings, chefs now make dim sum for the Instagram generation," 25 Mar. 2019 With Anthony Swarzak unlikely to be ready for opening day and plenty of young, unproven pitchers in camp, Seattle could pick up one or two relievers that are available as added depth in their system. Ryan Divish, The Seattle Times, "Mariners still looking to add another right-handed hitting catcher," 20 Feb. 2019 Reports revealed that the company often relied on more traditional vein blood draws and lab equipment made by other companies rather than its unproven medical technology. Ken Alltucker, USA TODAY, "As Theranos drama unwinds, former patients claim inaccurate tests changed their lives," 5 July 2018 Mayor Rahm Emanuel’s administration chose Musk’s company, which touts its still unproven tunneling technology, over more traditional high-speed rail options. James Hohmann, Washington Post, "The Daily 202: GOP senator urges love for LGBT youths in Pride Month speech," 14 June 2018 Those treatments are usually a combination of unproven and experimental therapies. Beth Mole, Ars Technica, "Crowdfunding raises millions for quack cancer remedies, like coffee enemas," 20 Sep. 2018 Does a school bus really need to be the testing ground for new and still relatively unproven technology? Liz Stinson, Curbed, "Florida town is first in the world to test autonomous school shuttles," 19 Sep. 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

15 May 2019

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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



English Language Learners Definition of unproven

: not tested and shown to be true, good, or useful


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

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a tendency to relapse

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