WordWeb Online

1. Making claim to or creating an appearance of (often undeserved) importance or distinction
   "a pretentious country house"; "a pretentious fraud"; "a pretentious scholarly edition"
    
2. Intended to attract notice and impress others
   - ostentatious, posey [Brit]
    
3. (of a display) tawdry or vulgar
   - ostentatious, kitsch, kitschy

See also: artsy [N. Amer], artsy-craftsy, arty, arty-crafty, flamboyant, flaunty, grandiloquent, grandiose, hifalutin, highfalutin, highfaluting, high-flown, high-sounding, hoity-toity, inflated, jumped-up [Brit], la-de-da, la-di-da, lah-di-dah, nouveau-riche, overblown, parvenu, parvenue, pompous, pontifical, portentous, sententious, sesquipedalian, showy, splashy, tasteless, upstart

Antonym: unpretentious

Encyclopedia: Pretentious