1. Intended to attract notice and impress others
   "an ostentatious sable coat"
   - pretentious, posey [Brit] 
2. (of a display) tawdry or vulgar
   - pretentious, kitsch, kitschy

See also: flamboyant, flaunty, ostentation, ostentatiously, ostentatiousness, showy, splashy, tasteless

Antonym: unostentatious

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