The Collaborative International Dictionary of English v.0.48:

Flaunt \Flaunt\ (fl[aum]nt or fl[add]nt; 277), v. i. [imp. & p.
   p. Flaunted; p. pr. & vb. n.. Flaunting.] [Cf. dial. G.
   flandern to flutter, wave; perh. akin to E. flatter,
   flutter.]
   To throw or spread out; to flutter; to move ostentatiously;
   as, a flaunting show.
   [1913 Webster]

         You flaunt about the streets in your new gilt chariot.
                                                  --Arbuthnot.
   [1913 Webster]

         One flaunts in rags, one flutters in brocade. --Pope.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

128 Moby Thesaurus words for "flaunting":
   Gongoresque, Johnsonian, affected, bedizened, big-sounding,
   blatant, blazon, blinding, brandish, brandishing, brave, bravura,
   braw, brazen, brazenfaced, brilliancy, chichi, colorful,
   convoluted, crude, daring, dash, dashing, declamatory,
   demonstration, display, dramatics, dressy, eclat, elevated,
   etalage, euphuistic, exhibition, exhibitionism, exhibitionistic,
   extravagant, false front, fanfaronade, figure, flagrant, flair,
   flamboyant, flaming, flaring, flashing, flashy, flaunt, flourish,
   flourishing, frilly, frothy, fulsome, gallant, garish, gaudy, gay,
   glaring, glittering, gorgeous, grandiloquent, grandiose,
   grandisonant, high-flowing, high-flown, high-flying, high-sounding,
   highfalutin, histrionics, inkhorn, jaunty, jazzy, labyrinthine,
   lexiphanic, lofty, loud, lurid, magniloquent, manifestation,
   meretricious, obtrusive, orotund, ostentatious, overbright,
   overdone, overelaborate, overinvolved, overwrought, pageant,
   pageantry, parade, pedantic, pompous, pretentious, rakish, raw,
   rhetorical, screaming, sensational, sensationalistic, sententious,
   shaking, sham, shameless, show, showing-off, showy, shrieking,
   snazzy, sonorous, spectacle, spectacular, splash, splashy, splurge,
   splurgy, sporty, staginess, stilted, tall, tawdry, theatrics,
   tortuous, undulation, vaunt, vulgar, wave, wave motion, waving