1. 俗艳的;浮华的;招摇的
If you describe a person or thing as flashy, you mean they are smart and noticeable, but in a rather vulgar way.

1. (used especially of clothes) marked by conspicuous display

Synonym: gaudyjazzyshowysporty

2. tastelessly showy

e.g. a flash car
a flashy ring
garish colors
a gaudy costume
loud sport shirts
a meretricious yet stylish book
tawdry ornaments

Synonym: brassycheapflashgarishgaudygimcrackloudmeretricioustackytattytawdrytrashy