Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “keen”


adjective (STRONG)    /kiːn/
extreme or very strong : Many people are taking a keen interest (= a very great interest ) in the result of the vote .Having a powerful effectStrong feelingsVery and extreme C1 very good or well developed : a keen sense of smell Extremely good keenly     /ˈkiː adverb They are keenly (= extremely ) aware that this will be their last chance to succeed .Physically strong and powerful
(Definition of keen adjective (STRONG) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of keen

Definitions of “keen” in other dictionaries

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More