Source : Webster's Revised Unabridged Dictionary (1913)

Pompous \Pomp"ous\, a. [F. pompeux, L. pomposus. See {Pomp}.]
   1. Displaying pomp; stately; showy with grandeur;
      magnificent; as, a pompous procession.

   2. Ostentatious; pretentious; boastful; vainlorious; as,
      pompous manners; a pompous style. ``Pompous in high
      presumption.'' --Chaucer.

            he pompous vanity of the old schoolmistress.
                                                  --Thackeray.
      -- {Pom"ous*ly}, adv. -- {Pomp"ous*ness}, n.

Source : WordNet®

pompousness
     n : lack of elegance as a consequence of being pompous and
         puffed up with vanity [syn: {ostentation}, {ostentatiousness},
          {pomposity}, {pretentiousness}, {splashiness}, {inflation}]