keen
Definitions
Having or showing eagerness or enthusiasm.
Highly developed; sharp or penetrating, as in senses or intellect.
Having a sharp edge or point.
Examples
She has a keen interest in learning how to play the piano.
The detective had a keen eye for detail and noticed the small clue immediately.
Synonyms
Antonyms
apathetic indifferent dull blunt uninterested reluctant obtuse