gaudy

Synonyms: blatant brazen brilliant catchpenny chichi chintzy coarse crude flashy flaunting florid frou-frou garish gay glaring gross gussied up jazzy kitschy loud meretricious obtrusive ostentatious pizzazz pretentious putting on the ritz raffish ritzy screaming showy snazzy splashy splendiferous tasteless tawdry tinsel

Antonyms: calm drab dull modest plain refined simple sophisticated