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indubitable

American  
[in-doo-bi-tuh-buhl, -dyoo-] / ɪnˈdu bɪ tə bəl, -ˈdju- /

adjective

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


indubitable British  
/ ɪnˈdjuːbɪtəbəl /

adjective

  1. incapable of being doubted; unquestionable

"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

Synonym Usage

See doubtless.

Other Word Forms

Etymology

Origin of indubitable

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

Explanation

Indubitable is a really fancy — five syllable, no less — way of saying "utterly obvious," or "clear beyond a doubt." Indubitably is very closely related to undoubtedly, and has essentially the same meaning. But if you want to throw in a certain educated, old-school touch to your vocabulary, go with indubitably instead. You'll sound smarter. After all, if it was good enough for Sherlock Holmes, it's good enough for you — "Indubitably, my dear Watson..." was his frequent preface to his less-quick-on-the-uptake sidekick.

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Vocabulary lists containing indubitable

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.

Indubitable, in-dū′bit-a-bl, adj. that cannot be doubted: certain.—n.

From Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) by Various

She was sorry to learn that her father had been unfortunate in business, that the Illinois Indubitable Insurance Company had failed.

From A Daughter of To-Day by Duncan, Sara Jeannette

"Indubitable" is a strong word, but no doubt it was justified, if the livers were really turned that way.

From What Is Man? and Other Essays by Twain, Mark

If thou hast come again, and art indeed My son Ulysses, give me then the proof 390 Indubitable, that I may believe.

From The Odyssey of Homer by Cowper, William

Indubitable evidences were given me, that diamonds continue to be found in as large quantities as ever.

From A Winter Tour in South Africa by Young, Frederick

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