n. sharpness; pungency; cleverness, perceptiveness, astuteness; intenseness; eagerness, enthusiasm

The following video provides you with the correct English pronunciation of the word "keenness", to help you become a better English speaker.

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Noun
1. a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind"
(synonym) acuteness, acuity, sharpness
(hypernym) intelligence
(hyponym) steel trap
2. a positive feeling of wanting to push ahead with something
(synonym) eagerness, avidity, avidness
(hypernym) enthusiasm
(hyponym) ardor, ardour, elan, zeal
3. thinness of edge or fineness of point
(synonym) sharpness
(hypernym) shape, form, configuration, contour, conformation
(hyponym) acuteness
(attribute) sharp

n. nadšení; bystrost; jemnost

Rzecz. zapał; gorliwość

(n.)
The quality or state of being keen.