Source : Webster's Revised Unabridged Dictionary (1913)

Sharpness \Sharp"ness\, n. [AS. scearpness.]
   The quality or condition of being sharp; keenness; acuteness.

Source : WordNet®

sharpness
     n 1: a quick and penetrating intelligence; "he argued with great
          acuteness"; "I admired the keenness of his mind" [syn: {acuteness},
           {acuity}, {keenness}]
     2: the attribute of urgency; "his voice had an edge to it"
        [syn: {edge}]
     3: a strong odor or taste property; "the pungency of mustard";
        "the sulfurous bite of garlic"; "the sharpness of strange
        spices" [syn: {pungency}, {bite}]
     4: thinness of edge or fineness of point [syn: {keenness}]
        [ant: {dullness}]
     5: the quality of being sharp and clear [syn: {distinctness}]
        [ant: {indistinctness}]
     6: harshness of manner [syn: {asperity}] [ant: {dullness}]