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.
Ronaldo in what is definitely, undoubtedly their last World Cup as players.
From The Wall Street Journal • Jun. 8, 2026
But another dot-com era name reaching a record will undoubtedly make investors uneasy, and increase the talk of an AI bubble.
From Barron's • May 29, 2026
“It is difficult to discuss immortality, but the ability to repair man will undoubtedly increase,” Kovalchuk told Russian media.
From The Wall Street Journal • May 29, 2026
The dismissal of the criminal indictment is undoubtedly a huge win for Abrego Garcia, but he faces an uphill legal battle as the federal government continues to pursue an active removal order against him.
From Slate • May 28, 2026
“I’m not some carnival exhibit, and you won’t use me as part of some unfulfilled desire for adventure and excitement! Which is undoubtedly why you chose me to be your Champion.”
From "Throne of Glass" by Sarah J. Maas
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.
