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.
Acrimonious, bitter, piercing. Example: keen satire or sarcasm
Of cold, wind, etc.: cutting, penetrating, piercing, sharp. Example: a keen wind
Of prices, extremely low as to be competitive.
Marvelous. Example: I just got this peachy keen new dress.
Brave, courageous; audacious, bold.
All clues having "KEEN"
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You can find a list of possible crossword clues for KEEN below.