unproven

[US]/ˌʌnˈpruːvn/
[UK]/ˌʌnˈpruːvn/
Frequency: Very High

Translation

adj.lacking confirmation or verification;lacking proof or evidence

Example Sentences

long-standing but unproven allegations.

The theory remains unproven.

His claims are unproven.

The technology is still unproven.

The drug's effectiveness is unproven.

She made unproven accusations against him.

The company's success is unproven.

The hypothesis remains unproven.

The product's safety is unproven.

The allegations are unproven.

The experiment's results are unproven.

Real-world Examples

" But this is unproven so far."

Source: VOA Slow English Technology

There's acupuncture... - Those are all unproven.

Source: Canadian drama "Saving Hope" Season 1

Many feel the technology is too new and unproven.

Source: New types of questions for the CET-4 (College English Test Band 4).

Some were passed down for generations and are still unproven.

Source: VOA Slow English - America

" This is a very costly proposal for an unproven program."

Source: VOA Listening

The reasons for the decreased longevity in the North remain unproven.

Source: Science in 60 Seconds Listening Compilation March 2015

But another is that the brain-stretching potential of edtech has remained unproven.

Source: Dominance Episode 1

Before Hubble, black holes were merely a concept, an unproven part of astronomical lore.

Source: The Final Frontier of the Hubble Space Telescope

Lula blamed Bolsonaro for inciting his supporters with unproven claims about possible election cheating.

Source: VOA Special January 2023 Collection

They have commented on two unproven case reports from medical publications released many years apart.

Source: VOA Special English Health

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