Sharp, as a blade (4)
I believe the answer is:
keen
(Other definitions for keen that I've seen before include "Sharp - avid" , "Penetrating; ardent" , "Sharp - eager" , "Piercing" , "Sharp -- express grief" .)
I believe the answer is:
keen
(Other definitions for keen that I've seen before include "Sharp - avid" , "Penetrating; ardent" , "Sharp - eager" , "Piercing" , "Sharp -- express grief" .)