unquestionable
Americanadjective
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not open to question; beyond doubt or dispute; indisputable; undeniable; certain.
an unquestionable fact.
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above criticism; unexceptionable.
a man of unquestionable principles.
adjective
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indubitable or indisputable
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not admitting of exception or qualification
an unquestionable decision
Related Words
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.
Though he has not fully fired this season, City's commitment to the player is unquestionable as the two parties recently reached an agreement over a new contract at Etihad Stadium.
From BBC • May 13, 2026
Foreign minister Anand has called Arctic defence "an unquestionable national security priority of this government".
From BBC • Feb. 6, 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
No matter where people stand on Schulz’s point of view on comedy, his mark on pop culture with his punchlines has become unquestionable.
From Los Angeles Times • Mar. 4, 2025
They are passionate spokespeople for their brand of life, giving Gogol and Moushumi a steady, unquestionable stream of advice about quotidian things.
From "The Namesake" by Jhumpa Lahiri
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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.