Dictionary.com
Thesaurus.com
Synonyms

extremely

American  
[ik-streem-lee] / ɪkˈstrim li /

adverb

  1. in an extreme degree; exceedingly.

    extremely cold.


extremely British  
/ ɪkˈstriːmlɪ /

adverb

  1. to the extreme; exceedingly

  2. (intensifier)

    I behaved extremely badly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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

First recorded in 1525–35; extreme + -ly

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.

Keep Reading on Vocabulary.com

Vocabulary lists containing extremely

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.

See Examples For:

Some people face extremely high costs for care at the end of their life.

From BBC Jul. 27, 2026

In Europe, however, discoveries of ancient elephant bone tools are extremely uncommon.

From Science Daily Jul. 27, 2026

The extremely narrow focus on theatrical releases in the Paramount-Warner Bros. case is the latest example.

From The Wall Street Journal Jul. 26, 2026

"In Gironde, the fire became extremely intense and unpredictable again at the start of the night, generating its own winds and advancing erratically toward the Bordeaux metropolitan area," Nunez said.

From Barron's Jul. 26, 2026

Me: Hattie also has extremely strong, arched feet.

From "The Sea in Winter" by Christine Day

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training