Synonyms for Tasteless (same or very similar meaning)
WordNet sense 1 (lacking taste or flavor or tang):
bland, flat, insipid, vapid, savorless
WordNet sense 2 (of a display that is tawdry or vulgar):
ostentatious, pretentious
WordNet sense 3 (tastelessly showy):
flashy, garish, gaudy, loud, tacky, tawdry
WordNet sense 4 (unrestrained and crudely rich):
barbaric
From the ODE community, based on WordNet
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