Source : Webster's Revised Unabridged Dictionary (1913)

Smartness \Smart"ness\, n.
   The quality or state of being smart.

Source : WordNet®

smartness
     n 1: intelligence as manifested in being quick and witty [syn: {brightness},
           {cleverness}]
     2: elegance by virtue of being fashionable [syn: {chic}, {chicness},
         {modishness}, {stylishness}, {swank}, {last word}]