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.
To keep devices as small and efficient as possible, the insulating layer needs to be extremely thin.
From Science Daily • May 9, 2026
Outbreaks of hantavirus are extremely rare, said Gounder, on cruise ships or otherwise.
From The Wall Street Journal • May 9, 2026
According to the World Health Organisation, the condition affects one in 10 women in the UK, and as well as extremely heavy periods, it can cause debilitating pain and sometimes infertility.
From BBC • May 8, 2026
Ryanair has done this by posting extremely low base fares and charging for everything it can—including checked bags, all but the smallest carry-ons, seat selection, and food and drinks.
From Barron's • May 8, 2026
“Fine, then. Now can you leave me alone? I’m extremely tired from being manhandled.”
From "Invisible Inkling" by Emily Jenkins
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.
