keen in Bulgarian
keen in Bulgarian
енергичен
(chiefly, Commonwealth) Often with a prepositional phrase, or with to and an infinitive: showing a quick and ardent responsiveness or willingness; eager, enthusiastic, interested.
ревностен
(chiefly, Commonwealth) Often with a prepositional phrase, or with to and an infinitive: showing a quick and ardent responsiveness or willingness; eager, enthusiastic, interested.
интензивен
Fierce, intense, vehement.
силен
Fierce, intense, vehement.
пронизващ
Of cold, wind, etc.: cutting, penetrating, piercing, sharp.