1. harshness of manner
Synonym: asperity
2. the quality of being sharp and clear
Synonym: distinctness
3. thinness of edge or fineness of point
Synonym: keenness
4. the quality of being keenly and painfully felt
e.g. the sharpness of her loss
5. a strong odor or taste property
e.g. the pungency of mustard
the sulfurous bite of garlic
the sharpness of strange spices
the raciness of the wine
6. the attribute of urgency in tone of voice
e.g. his voice had an edge to it
Synonym: edge
7. a quick and penetrating intelligence
e.g. he argued with great acuteness
I admired the keenness of his mind