BOB半岛

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        keen

         
         
        pronunciation:
        kin
        features:
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        part of speech: adjective
        inflections: keener, keenest
        definition 1: very sharp; able to cut easily into thin, exact pieces.
        That knife has a keen blade.
        synonyms:
        sharp
        antonyms:
        blunt, dull
        similar words:
        pointed
        definition 2: quickly and easily able to sense or understand; sharp.
        Dogs have keen hearing.Erin has a keen mind.
        synonyms:
        acute, sharp
        antonyms:
        dull
        similar words:
        agile, alert, fine, pungent, shrewd, tart
        definition 3: felt strongly; eager; intense.
        She has a keen interest in sports.
        synonyms:
        intense, strong
        antonyms:
        indifferent
        similar words:
        acute, ardent, deep, extreme, heavy, intent, vivid
        derivations: keenly (adv.), keenness (n.)
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          emotion, mind, sense