To be flashy is to be showy in a tasteless way. Just like a flash of light is hard to ignore, flashy behavior draws attention.

Do you know anyone who is a show-off? That person is probably flashy. Wearing brightly colored rings is flashy. Buying a sports car is flashy. Boasting about how much money you have is flashy. Flashy behavior is the opposite of classy: it consists of showing off things in a loud, obnoxious way.

Definitions of flashy

adj tastelessly showy

“a flashy ring”
brassy, cheap, flash, garish, gaudy, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashy
lacking aesthetic or social taste

adj (used especially of clothes) marked by conspicuous display

gaudy, jazzy, showy, sporty
colorful, colourful
striking in variety and interest

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