adjective, keen·er, keen·est.
Origin of keen1
SYNONYMS FOR keen
Related formskeen·ly, adverbkeen·ness, noun
Examples from the Web for keenness
Yet the keenness with which immorality of the particular kind is watched fans the flame of lust.Expositor's Bible: The Book of Job|Robert Watson
Your ladyship's eyes preserve not only their beauty but a keenness beyond belief.The Lion's Skin|Rafael Sabatini
I think that by the keenness of the living ray which I endured, I should have been dazzled if my eyes had been averted from it.
On the contrary, the keenness of his instinct and perception, as in the case of most savages, is quite remarkable.
I gloried in the keenness of my intellect, the absolute order and control of my thoughts.The Crooked House|Brandon Fleming