Adjective ostentatious has 2 senses
  1. ostentatious, pretentious - intended to attract notice and impress others; "an ostentatious sable coat"
    Antonyms: unostentatious, unpretentious, unpretending, quiet, restrained
  2. ostentatious, pretentious, kitsch - of a display that is tawdry or vulgar
    Antonyms: tasteful, in good taste (indirect, via tasteless)
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