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English definition of “keen”

keen

adjective (EAGER)    /kiːn/
B1 very interested , eager , or wanting (to do) something very much: They were very keen to start work as soon as possible . Joan wanted to go to a movie but I wasn't keen (= I didn't want to go). She's a keen tennis player She's keen on ( playing ) tennis .UK My son's mad keen on cycling . He's rather keen on a girl in his school (= he is very attracted to her).Ready and willingUnwilling and reluctantExcited, interested and enthusiastic 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 (EAGER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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