Source : Webster's Revised Unabridged Dictionary (1913)

Gaudiness \Gaud"i*ness\, n.
   The quality of being gaudy. --Whitlock.

Source : WordNet®

gaudiness
     n 1: tasteless showiness [syn: {flashiness}, {garishness}, {loudness},
           {brashness}, {meretriciousness}, {tawdriness}, {glitz}]
     2: strident color or excessive ornamentation [syn: {garishness}]