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.
The decision was framed as a magnanimous act of mercy and was undoubtedly meant to demonstrate goodwill on the part of Havana’s ruling elite.
From The Wall Street Journal • Apr. 12, 2026
Reilly added that while price action in the sector is undoubtedly negative, it should be viewed through the lens of higher Treasury bond yields, which have compressed valuations even as earnings expectations have improved.
From Barron's • Mar. 31, 2026
A city on the moon would undoubtedly be an incredible accomplishment.
From MarketWatch • Mar. 31, 2026
He said that undoubtedly had an impact in terms of the force's ability to investigate and safeguard in all areas of criminality, particularly more serious incidents.
From BBC • Mar. 25, 2026
She was a rattlebrained fool who would undoubtedly giggle and take it as a great joke when the Cauldron-Born came for him.
From "The Book of Three" by Lloyd Alexander
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.
