Source : Webster's Revised Unabridged Dictionary (1913)

Foxiness \Fox"i*ness\, n.
   1. The state or quality of being foxy, or foxlike;
      craftiness; shrewdness.

   2. The state of being foxed or discolored, as books; decay;
      deterioration.

   3. A coarse and sour taste in grapes.

Source : WordNet®

foxiness
     n : shrewdness as demonstrated by being skilled in deception
         [syn: {craft}, {craftiness}, {cunning}, {guile}, {slyness},
          {wiliness}]