extremely
Americanadverb
adverb
-
to the extreme; exceedingly
-
(intensifier)
I behaved extremely badly
Usage
What does extremely mean? Extremely means to a very great degree—exceedingly. Instead of saying I’m very very tired, you could say I’m extremely tired. Extremely is the adverb form of the adjective extreme, which means of the highest degree or intensity. Extremely is almost always used to modify (describe) adjectives and almost never verbs. It emphasizes or intensifies the meaning of the adjective and indicates that its level is far beyond the ordinary. Example: At some times during the winter, it gets so extremely cold here that it’s dangerous to go outside for more than a minute.
Etymology
Origin of extremely
Explanation
Extremely is a word that emphasizes the intensity of whatever it is you're talking about. If you say you're extremely angry, that word alone tells me I better not mess with you. Extremely comes from the word extreme, which means great, severe, or exceptional. If you climb to extreme heights on a mountain, you've climbed extremely high. Use extremely to let people know that what you're talking about exceeds or goes beyond the norm. A joke that's not just funny, but extremely funny, is one that might have you gasping to catch your breath from laughing so hard.
Vocabulary lists containing extremely
List 3
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List 2
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Florida's B.E.S.T. Common Suffixes: -ly
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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.
Extremely small structural flaws have long challenged the semiconductor industry.
From Science Daily • Mar. 5, 2026
Extremely online observers came up with bizarre metaphors to characterize Anthropic’s heroism and pushed Claude to the top of the app-store charts over the weekend.
From Slate • Mar. 3, 2026
"Unfortunately, I was naive and didn't measure it. Extremely stupid of me, there was just so much stress going on. But rules are rules."
From BBC • Feb. 16, 2026
Extremely detailed, internally produced product information does seem to help the travel company Expedia Group in AI chats, according to Chief Marketing Officer Jochen Koedijk.
From The Wall Street Journal • Dec. 18, 2025
“It would be very convenient. Extremely convenient,” he added, aware that the blind man liked it when he exercised his vocabulary.
From "Messenger" by Lois Lowry
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.
