unquestionable
Americanadjective
-
not open to question; beyond doubt or dispute; indisputable; undeniable; certain.
an unquestionable fact.
-
above criticism; unexceptionable.
a man of unquestionable principles.
adjective
-
indubitable or indisputable
-
not admitting of exception or qualification
an unquestionable decision
Synonym Usage
See doubtless ( def. ).
Other Word Forms
Etymology
Origin of unquestionable
First recorded in 1590–1600; un- 1 + questionable
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.
But Dallas also has Rookie of the Year Cooper Flagg, an unquestionable bright spot.
From The Wall Street Journal • Jun. 22, 2026
“It’s unquestionable that climate change and environmental impacts are impacting the speed and severity of which things change. ... Climate resilience has to be part of the conversation.”
From Los Angeles Times • Jan. 27, 2026
Millie Bright's international retirement is a reflection of a changing of the guard in Sarina Wiegman's England team - but her impact on their success is unquestionable.
From BBC • Oct. 13, 2025
“She displayed unquestionable strength and brought attention to the realities of powerful men in our orbit and the misconduct that has persisted for decades without repercussion.”
From Los Angeles Times • Jul. 2, 2025
The woman carried the same unquestionable authority as Tally’s teachers back in Uglyville.
From "Uglies" by Scott Westerfeld
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
