undoubtedly
Americanadverb
adverb
-
certainly or definitely; unquestionably
he is undoubtedly talented
-
(sentence modifier) without doubt; certainly or indisputably
undoubtedly there will be changes
Etymology
Origin of undoubtedly
First recorded in 1500–50; undoubted ( def. ) + -ly ( def. )
Explanation
Undoubtedly means certainly. If you are undoubtedly beautiful, then everyone agrees you are attractive. No one could think otherwise. There are a lot of things in life that people doubt. However, when you're sure of something or feel strongly about it, this is a handy word. A beautiful spring day is undoubtedly wonderful. Dogs undoubtedly love to chase squirrels. Adults undoubtedly love to drink coffee in the morning, and kids undoubtedly love to get a day off from school. You are undoubtedly aware that this is a long explanation for something as simple as this word.
Vocabulary lists containing undoubtedly
“About Edward Jenner” from the Jenner Institute
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"Tinker v. Des Moines": Excerpts from Justice Black's Dissenting Opinion
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Lesson 21
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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.
It will undoubtedly make Na’s gallows-humor-inflected brand more global, even if it lifts him out of the cult niche that’s nourished him to date.
From Los Angeles Times • May 17, 2026
The clause was later removed, but parliamentary speaker Ruslan Stefanchuk said changing the constitutional definition of marriage would "undoubtedly generate disputes... that is why we left this regulation as it is."
From Barron's • May 17, 2026
Rossini’s devotion, undoubtedly sincere, was never permitted to cloud his humor.
From The Wall Street Journal • May 15, 2026
But while they undoubtedly have good intentions, their focus is misplaced.
From Salon • May 15, 2026
There he had undoubtedly fallen into a pool or a river and come to a tragic, but hardly an untimely, end.
From "The Fellowship of the Ring" by J.R.R. Tolkien
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.
