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Synonyms

unproven

British  
/ ʌnˈpruːvən /

adjective

  1. not established as true by evidence or demonstration

    unproven allegations

  2. (of a new product, system, treatment, etc) not tried or tested

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It also could have made farmers more cautious about using unproven and expensive new technology.

From Los Angeles Times • Jun. 15, 2026

"Many of our initiatives… involve significant technical complexity, unproven technologies or technologies that do not exist, and such initiatives may not achieve commercial viability," the company wrote in its prospectus.

From BBC • Jun. 12, 2026

By promising trillions in future profits from other, completely unproven, businesses.

From MarketWatch • Jun. 10, 2026

Beyond a financial injection, the $2 billion funding package served as a vote of confidence in a technology that many still treat as an unproven, long-term gamble.

From Barron's • Jun. 9, 2026

For years, the notion was unproven, somewhere in the realm of received wisdom or suburban myth.

From "Drama High" by Michael Sokolove

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