(usually with adjectives and adverbs) to a very high degree extremely important/useful/complicated She found it extremely difficult to get a job. Their new CD is selling extremely well. I would be extremely grateful if you could have a word with her. The risks involved are extremely high. Mark knew he had behaved extremely badly.
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation: extremely