Source : Webster's Revised Unabridged Dictionary (1913)

Pettiness \Pet"ti*ness\, n.
   The quality or state of being petty or paltry; littleness;
   meanness.

Source : WordNet®

pettiness
     n 1: narrowness of mind or ideas or views
     2: the quality of being unimportant and petty or frivolous
        [syn: {triviality}, {slightness}]
     3: lack of generosity in trifling matters