unproven
Britishadjective
-
not established as true by evidence or demonstration
unproven allegations
-
(of a new product, system, treatment, etc) not tried or tested
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.
This resulted in the 2022 creation of an initiative called Frontier, which set out to spend $1 billion on unproven carbon-removal technologies with backing from Stripe, Google, Shopify and others.
From The Wall Street Journal • Jun. 18, 2026
It also could have made farmers more cautious about using unproven and expensive new technology.
From Los Angeles Times • Jun. 15, 2026
"While respecting Canada's sovereign right to enforce its immigration laws, Ghana considers that reliance on unproven charges in the absence of a judicial determination raises fundamental questions of fairness and proportionality," said the statement.
From Barron's • Jun. 13, 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
Elsewhere in his essay, Greene does not hide the fact that many of his fellow physicists think that string theory and the multiverse are extravagant and unproven.
From "The Sense of Style" by Steven Pinker
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
