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Synonyms

undeniable

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

adjective

  1. incapable of being denied or disputed.

    undeniable evidence of arson.

    Synonyms:
    sure, certain, clear, evident, obvious, unquestionable, incontestable, incontrovertible
  2. not open to refusal.

    an undeniable call for help.

  3. unquestioned as to quality, merit, etc.; indisputably good.

    undeniable artistic talent.


undeniable British  
/ ˌʌndɪˈnaɪəbəl /

adjective

  1. unquestionably or obviously true

  2. of unquestionable excellence

    a man of undeniable character

  3. unable to be resisted or denied

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of undeniable

First recorded in 1540–50; un- 1 + deniable

Explanation

Something undeniable is clearly true: it's undeniable that water is wet and the sky is blue. Undeniable things are obviously, clearly, totally, blatantly true, so true that it would be crazy to deny them. If you spilled soup in your lap, it's undeniable that you're wet and probably embarrassed. It's undeniable that a lot of dogs like chasing squirrels. On the other hand, it's undeniable that not everything is that simple. One person might deny what another thinks is flat-out undeniable.

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Vocabulary lists containing undeniable

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.

Monroe’s personal legacy is like a charm bracelet hung with more unsubstantiated rumors than genuine facts, but one undeniable trait was her thirst to defy the world’s expectations.

From Salon • Jul. 6, 2026

On an LP full of spine-tingling performances, the undeniable high point is Hathaway’s take on Carole King’s “You’ve Got a Friend” — a clear-eyed if optimistic portrait of resilience and cultural exchange.

From Los Angeles Times • Jun. 30, 2026

He’s more charismatic than Starmer, that much is undeniable, with a kind of boyish charm, and he can do “normal bloke” better than Starmer can.

From Slate • Jun. 23, 2026

Lost in the noise are the undeniable health benefits of catching rays.

From The Wall Street Journal • Jun. 16, 2026

“You will probably turn up as an earnest young psychic researcher. And I will be a lady of undeniable gifts but dubious reputation.”

From "The Haunting of Hill House" by Shirley Jackson

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