keenest
adjective
Definitions
Often with a prepositional phrase, or with to and an infinitive: showing a quick and ardent responsiveness or willingness; eager, enthusiastic, interested.
Example: I’m keen on computers.
Fierce, intense, vehement.
Example: This boy has a keen appetite.
Having a fine edge or point; sharp.
Acute of mind, having or expressing mental acuteness; penetrating, sharp.