Try Our Apps


Avoid these words. Seriously.


[uhn-kwes-chuh-nuh-buh l] /ʌnˈkwɛs tʃə nə bəl/
not open to question; beyond doubt or dispute; indisputable; undeniable; certain:
an unquestionable fact.
above criticism; unexceptionable:
a man of unquestionable principles.
Origin of unquestionable
First recorded in 1590-1600; un-1 + questionable
Related forms
unquestionableness, noun
unquestionably, adverb
Synonym Study
See doubtless. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for unquestionable
Contemporary Examples
Historical Examples
  • Perhaps it was his unquestionable distress that weakened her.

    The Black Bag Louis Joseph Vance
  • I will afford the most unquestionable demonstration of the veracity of my declarations.

    Imogen William Godwin
  • That the Egyptians had stringed instruments is unquestionable.

    How the Piano Came to Be Ellye Howell Glover
  • This would seem to be such an unquestionable fact as to admit of no argument.

    Aztec Land Maturin M. Ballou
  • Its plainness troubled him, but its cleanliness was unquestionable.

    The Golden Woman Ridgwell Cullum
  • And his caste was evident and unquestionable, in spite of any circumstance.

    The Flying Mercury Eleanor M. Ingram
British Dictionary definitions for unquestionable


indubitable or indisputable
not admitting of exception or qualification: an unquestionable decision
Derived Forms
unquestionability, unquestionableness, 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
Cite This Source
Word Origin and History for unquestionable

c.1600, from un- (1) "not" + questionable. Related: Unquestionably.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Nearby words for unquestionable

Word Value for unquestionable

Scrabble Words With Friends