Source : Webster's Revised Unabridged Dictionary (1913)

Inelegance \In*el"e*gance\, Inelegancy \In*el"e*gan*cy\, n.; pl.
   {Inelegances}, {Inelegancies}. [L. inelegantia: cf. F.
   in['e]l['e]gance.]
   1. The quality of being inelegant; want of elegance or grace;
      want of refinement, beauty, or polish in language,
      composition, or manners.

            The notorious inelegance of her figure. --T. Hook.

   2. Anything inelegant; as, inelegance of style in literary
      composition.

Source : WordNet®

inelegance
     n : the quality of lacking refinement and good taste [ant: {elegance}]