unproven

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.

And many American doctors initially opposed the procedure as dangerous, medically unproven, and expensive because of physicians’ often-hefty fees and the cost of maintaining facilities for quarantining people temporarily after they were inoculated.

From The Wall Street Journal • Apr. 14, 2026

While the idea was influential, it remained unproven because carbenes were known to be too unstable, especially in water, to capture or study.

From Science Daily • Apr. 11, 2026

But as attractive as they sound, SMRs are viewed as unproven at commercial scale.

From BBC • Apr. 3, 2026

And during oral arguments in January, both the liberal and conservative flanks of the court expressed doubts in the government’s claim that Trump could oust Cook on the basis of an unproven allegation.

From Slate • Mar. 19, 2026

He was well-read and intelligent, but young and unproven.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin