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Synonyms

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.

See Examples For:

To acknowledge water’s indubitable force as a co-creator seems to me a very straightforward thing, even though copyright law in almost every jurisdiction denies the moral authorship of the living world in respect of art.

From Salon May 28, 2025

"It is indubitable that the impact of climate change will increasingly prejudice the lives and families of many persons."

From Reuters Oct. 5, 2023

In the 15 years that followed her country music debut, Swift has fully metamorphosed from Nashville darling into indubitable Queen of Pop.

From Los Angeles Times Nov. 15, 2022

In short, the simplest, easiest, obvious and now all but indubitable answer is that Jefferson was the father.

From Washington Post Jun. 12, 2018

The topic of the discussion is how we struggle to reconcile the indubitable fact of death with our incomprehension of the possibility that a person can no longer exist.

From "The Sense of Style" by Steven Pinker

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