keen
keen
adjective
Having a sharp edge or point, or a highly developed and perceptive sense.
"The chef used a keen knife."
adjective
Very enthusiastic or eager about something, or to do something.
"She is keen to learn new skills."
Thesaurus
Synonyms: lament, intense, exquisite, penetrating, sharp, perceptive, incisive, acute, knifelike, penetrative, piercing, discriminating