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

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.

“If you’re not familiar with the area — and I mean extremely familiar — it’s very easy to fall off the trail.”

From Los Angeles Times

"The player considers himself a Napoli player, and the same goes for us. This is extremely important."

From BBC

She described her father as an "extremely robust and strong man" when he went to prison, but has over the last year he has "lost a significant amount of weight".

From BBC

Producing 2nm chips, the most cutting-edge in the industry, is "extremely hard and expensive", requiring "advanced lithography machines, deep knowledge of the production process, and huge investments", Slijkerman told AFP.

From Barron's

Iran is facing a weak rial, extremely high inflation and international sanctions.

From The Wall Street Journal