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.

Major League Baseball introduced its automated ball-strike challenge system about six weeks ago and, already, there is one undeniable truth about the game’s new electronic overlords: The robot umpires have it in for pitchers.

From The Wall Street Journal • May 6, 2026

"We think the distance trend is undeniable," Darbon told me.

From BBC • Apr. 27, 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

She wasn’t even sure how she knew that, but it was undeniable.

From "Aru Shah and the End of Time" by Roshani Chokshi

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