UNPROVEN Synonyms: 50 Similar and Opposite Words

unproven

adjective

Definition of unproven

as in unproved

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Example Sentences

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.

Recent Examples of unproven Major hurdles remain, including radioactive-waste storage, high costs, unproven reactor designs and likely opposition from environmental groups and communities asked to host future facilities. — Giada Zampano, Los Angeles Times, 23 Sep. 2026 The numbers look good on paper, but the Knights’ rushing attack is still unproven. — Steven Johnson, Fort Worth Star-Telegram, 22 Sep. 2026 While security monitoring with AI might be easier, perhaps looping in some more traditional safety systems might be the smarter plan than relying on unproven automation. — Jon Martindale, PC Magazine, 18 Sep. 2026 Georgia Tech in 2001 broke ground on an ambitious — and unproven — plan to to transform eight blocks of derelict lots in Midtown into an academic and corporate hub. — Zachary Hansen, AJC.com, 18 Sep. 2026 See All Example Sentences for unproven

Recent Examples of Synonyms for unproven

Adjective

That is sparking a whole industry that markets other peptides — largely unproved and untested — that are said to increase muscle growth, speed recovery and fight aging.

— Jonathan Fahey, Los Angeles Times, 18 Sep. 2026
But Starship still must demonstrate multiple unproved capabilities that are crucial to NASA’s plans—such as the in-space refueling, via multiple launches, that’s required for sending the vehicle out of low-Earth orbit to the moon.

— Lee Billings, Scientific American, 29 May 2026

Definition of unproved

Adjective

The rest of the filmmaking, too, is content to coast at a lower difficulty setting, from the proficient but anonymously taupe lensing by master DP Robert Elswit to an untested ensemble of ever-watchable actors playing capably to type.

— Guy Lodge, Variety, 8 Oct. 2026
Smaller banks may not be able to participate in the process and even large ones may initially be wary of untested new rules.

— Matthew Martin, semafor.com, 2 Oct. 2026

Definition of untested

Adjective

Several Japanese nationals, including executives at top Japanese firms, were reportedly detained in August over alleged violations of dual-use goods export restrictions.

— Anniek Bao,Lim Hui Jie, CNBC, 5 Oct. 2026
One answer to such questions comes from the recent resignation of BOR Vice Chair Juanita James, who was appointed to head the search for a new CSCU chancellor, and faced her own criticism for alleged inaction over the problems within the BOR.

— Dr. Matthew Warshauer, Hartford Courant, 4 Oct. 2026

Definition of alleged

Adjective

Under the concept True Dystopic, the #LINK Vertical program brings together auteur documentary and genre cinema, using real locations in Rio de Janeiro as settings for imagining speculative futures.

— Rafa Sales Ross, Variety, 6 Oct. 2026
The governor, who is up for reelection in November, said speculative proposals to build data centers had swamped Pennsylvania.

— Salena Zito, Washington Post, 6 Oct. 2026

Definition of speculative

Adjective

Washington Examiner columnist Joe Concha blasted former first lady Michelle Obama’s podcast, IMO with Michelle Obama and Craig Robinson, after a segment discussing hypothetical scenarios of men getting pregnant.

— Mackenzie Chase, The Washington Examiner, 4 Oct. 2026
In other words, Curtis’ hypothetical hinged on a somewhat ludicrous notion, which is to say if ESPN chose to revisit that botched experiment, McAfee would be the guy to take on the role as comic foil.

— Anthony Crupi, Sportico.com, 2 Oct. 2026

Definition of hypothetical

Adjective

The proposed amendment, which will require the support of at least 94 of the 141 members of parliament to pass, would remove that provision.

— Sam Meredith, CNBC, 6 Oct. 2026
New agency gets broad powers The proposed Department of Artificial Intelligence would operate as a cabinet-level federal agency.

— Aamir Khollam, Interesting Engineering, 23 Sep. 2026

Definition of proposed

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“Unproven.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unproven. Accessed 10 Oct. 2026.

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Synonyms of unproven

adjective

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