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English definition of “keen”

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     /ˈkiːn.li/ 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)
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