in·du·bi·ta·bil·i·ty
(ˌ)inˌd(y)übətəˈbilətē 
ən-,
-bətə-,
-lətē,
-i
plural -es
: the quality or state of being unquestionable : certainty
the English empiricists tended to lean on the indubitability of the facts given—
S. C. Pepper
S. C. Pepper
Did you know?
There's no reason to question the fairly straightforward etymology of indubitable—a word that has remained true to its Latin roots. It arrived in Middle English in the 15th century from Latin indubitabilis, itself a combination of "in-" ("not") and "dubitabilis" ("open to doubt or question"). "Dubitabilis" is from the verb dubitare, meaning "to doubt," which also gave us our "doubt." The word dubitable also exists in English, and of course means "questionable or doubtable," but it is fairly rare.
Examples of indubitable in a Sentence
Adjective
the indubitable fact that there are no more woolly mammoths or saber-toothed tigers around
Recent Examples on the Web
Quanta Magazine, 18 May 2026
The second route, and the route that makes indubitable sense, entails using the techniques and methods of psychology to gauge the performance of AI.
—Lance Eliot, Forbes.com, 15 Apr. 2026
This Japandi design will look great in your forever home, too, of course, with its light wash wood and indubitable Donald Judd-ness.
—Julia Harrison, Architectural Digest, 16 Mar. 2026
In 2025, Rebecca Yarros is that genre’s indubitable champion.
—Rebecca Yarros, Vulture, 1 Dec. 2025
But while the trajectory is indubitable, the ascent is far from smooth, as Ghana’s recent experiences neatly encapsulate.
—Charlie Campbell, Time, 30 Oct. 2025
The DeSantis announcement is an indubitable win for Musk.
—Scott Nover, Quartz, 24 May 2023
These key facts are essentially indubitable.
—David Harsanyi, National Review, 16 Mar. 2023
In the 15 years that followed her country music debut, Swift has fully metamorphosed from Nashville darling into indubitable Queen of Pop.
—Los Angeles Times, 15 Nov. 2022
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Adjective
As a result, mathematical truths do not make up a unified whole of equally indubitable truths; instead, their status as knowledge varies gradually from doubtless facts to increasingly uncertain hypotheses.
—Quanta Magazine, 18 May 2026
The second route, and the route that makes indubitable sense, entails using the techniques and methods of psychology to gauge the performance of AI.
—Lance Eliot, Forbes.com, 15 Apr. 2026
This Japandi design will look great in your forever home, too, of course, with its light wash wood and indubitable Donald Judd-ness.
—Julia Harrison, Architectural Digest, 16 Mar. 2026
In 2025, Rebecca Yarros is that genre’s indubitable champion.
—Rebecca Yarros, Vulture, 1 Dec. 2025
But while the trajectory is indubitable, the ascent is far from smooth, as Ghana’s recent experiences neatly encapsulate.
—Charlie Campbell, Time, 30 Oct. 2025
The DeSantis announcement is an indubitable win for Musk.
—Scott Nover, Quartz, 24 May 2023
These key facts are essentially indubitable.
—David Harsanyi, National Review, 16 Mar. 2023
In the 15 years that followed her country music debut, Swift has fully metamorphosed from Nashville darling into indubitable Queen of Pop.
—Los Angeles Times, 15 Nov. 2022
Cite this Entry
“Indubitable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indubitable. Accessed 19 Jun. 2026.
Copy CitationKids Definition
indubitable
adjective
in·du·bi·ta·ble
(ˈ)in-ˈd(y)ü-bət-ə-bəl
: impossible to doubt : beyond question
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