unproven

adjective

un·​prov·​en ˌən-ˈprü-vən 

British also -ˈprō-

: 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

If anything, the addition of unproven players could have been seen as reason for skepticism, reason to believe the carousel would continue. — Nicolas Villamil, The Orlando Sentinel, 8 Oct. 2026

Missouri sued him in March 2020 for pitching unproven products as a potential cure for COVID-19. — Charlotte Observer, 6 Oct. 2026

Cancer patients are being persuaded to spend tens of thousands on unproven treatments by alternative-medicine clinics. — Trisha Thadani Kirsten Potter Tanya Pérez Devin Murphy, New York Times, 4 Oct. 2026

Do not introduce an unproven customer-facing AI workflow during peak season. — Michael Fox, Forbes.com, 2 Oct. 2026

Word History

First Known Use

1563, in the meaning defined above

Rhymes for unproven

• proven

Legal Definition

unproven

adjective

un·​prov·​en

ˌən-ˈprü-vən

: not proven

an unproven allegation