[ in-doo-bi-tuh-buhl, -dyoo- ]
/ ɪnˈdu bɪ tə bəl, -ˈdyu- /
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See synonyms for: indubitable / indubitableness / indubitably on Thesaurus.com


that cannot be doubted; patently evident or certain; unquestionable.



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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of indubitable

From the Latin word indubitābilis, dating back to 1615–25. See in-3, dubitable

synonym study for indubitable

See doubtless.

OTHER WORDS FROM indubitable

in·du·bi·ta·bil·i·ty, in·du·bi·ta·ble·ness, nounin·du·bi·ta·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for indubitable

British Dictionary definitions for indubitable

/ (ɪnˈdjuːbɪtəbəl) /


incapable of being doubted; unquestionable

Derived forms of indubitable

indubitability or indubitableness, noun

Word Origin for indubitable

C18: from Latin indubitābilis, from in- 1 + dubitāre to doubt
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