Source : Webster's Revised Unabridged Dictionary (1913)

Spiciness \Spi"ci*ness\, n.
   The quality or state of being spicy.

Source : WordNet®

spiciness
     n 1: the property of being seasoned with spice and so highly
          flavored [syn: {spice}, {spicery}]
     2: behavior or language bordering on indelicacy [syn: {gaminess},
         {raciness}, {ribaldry}]