incapable of being denied or disputed: undeniable evidence of arson.
not open to refusal: an undeniable call for help.
unquestioned as to quality, merit, etc.; indisputably good: undeniable artistic talent.

Origin of undeniable

First recorded in 1540–50; un-1 + deniable
Related formsun·de·ni·a·ble·ness, nounun·de·ni·a·bly, adverb

Synonyms for undeniable

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for undeniably

Contemporary Examples of undeniably

Historical Examples of undeniably

  • The passenger on his right was a girl—red-haired and undeniably attractive.

    No Hiding Place

    Richard R. Smith

  • And this, as possessing measure, must undeniably also be an art and science?

  • That, Monsieur le Comte, was undeniably the action of a cheat.

  • Yet the authoress of "Sour Grapes" was undeniably a successful woman.

    Audrey Craven

    May Sinclair

  • She was like an opal—all sparkle when you move it, and at rest dull, most undeniably dull.

    Audrey Craven

    May Sinclair

British Dictionary definitions for undeniably



in an unquestionable or obvious manner; irrefutably



unquestionably or obviously true
of unquestionable excellencea man of undeniable character
unable to be resisted or denied
Derived Formsundeniableness, noun
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

Word Origin and History for undeniably



1540s, from un- (1) "not" + deny + -able. Related: Undeniably.

Online Etymology Dictionary, © 2010 Douglas Harper