Dictionary.com
Thesaurus.com
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

  • undeniableness noun
  • undeniably adverb

Etymology

Origin of undeniable

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

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.

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

From Salon • Apr. 4, 2026

That his work has become commercially iconic is undeniable; whether that’s a laudable artistic legacy to leave behind is a different question.

From The Wall Street Journal • Apr. 3, 2026

The John Brown trial cannot completely resolve today’s birthright citizenship controversy—Brown was a citizen of the U.S., although not of Virginia, at a time when state citizenship was primary—but the implications are undeniable.

From Slate • Apr. 2, 2026

And even if you disagree with how Tafoya made her point, one thing is undeniable: People will be cutting back on luxuries in order to pay for skyrocketing energy prices.

From MarketWatch • Mar. 20, 2026

On the one hand, there was an undeniable and widespread sense of pride, even of collective achievement, in the successes of Spaulding and the Mutual.

From "The Best of Enemies" by Osha Gray Davidson