undeniable

[uhn-di-nahy-uh-buhl] / ˌʌn dɪˈnaɪ ə bəl /

ADJECTIVE

definite, proven

Synonyms

STRONGEST

certain evident indisputable irrefutable obvious unassailable unquestionable

WEAK

actual beyond doubt beyond question binding clear compulsory for sure inarguable incontestable incontrovertible indubitable manifest necessary no ifs and or buts obligatory open and shut patent positive real sound sure sure thing true unanswerable undoubted

Antonyms

STRONGEST

disputable doubtful dubious indefinite obscure questionable refutable uncertain unclear unreliable unsure vague

WEAK

contestable doubted 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.

Ultimately the combination of intelligence, technology and old-fashioned policework would build an undeniable case.

From BBC • Apr. 14, 2026

Puppet magic, though it may come in and out of fashion, is ancient and undeniable.

From Los Angeles Times • Apr. 13, 2026

"We spent a decade learning that social media companies will not self-regulate. We have now perhaps 18 months before the same lesson becomes undeniable for AI."

From Barron's • Apr. 10, 2026

What they are is addictive, catchy, energizing and undeniable.

From Salon • Apr. 4, 2026

The boat assignment seemed tangible and undeniable evidence that what the sophomores had been speculating about was true—something was special about them, and Ulbrickson had unusual confidence in them as a unit.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

Vocabulary lists containing undeniable

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