The word "flashy" is correct and usable in written English.
You can use it to describe something that is eye-catching and brightly colored or something that is expensive and showy. For example, "She wore a flashy, designer dress to the event."
· The Pierhouse (01631 730302, pierhousehotel.co.uk) doubles from £90 B&B One of the less flashy spots on the eastern seaboard, Kittery Point is no Hampton's or Martha's Vinyard.
Will its 6,000 new houses, two new technology centres and park genuinely engage with local culture, or will it simply be a flashy area for rich Spaniards looking for a waterfront property?
Then she vaped, luxuriantly, on a flashy chrome tube.
Flashy advertisements really don't mean anything to most avid readers.
Unlike his more flashy contemporaries, 6ft-plus aristocrats of the front line towering above their competitors in a series of decorous leaps stage-managed for the highlights reel, Cahill's headers have always emerged up and out of the tangle of bodies in the box, as if capturing the evolution of a collective kinetic mass rather than some deviation from it.
6 Tom Wood 6/10 The Northampton lock did nothing flashy but got through plenty of work in a gritty performance and was an effective target in the lineout.
David Dimbleby today promised the BBC would not "sex up" its coverage of what promises to be a less than thrilling general election in a thinly disguised dig at ITV's flashy plans for poll night.
As argued here previously, the success of the trading plan makes a flashy offer of shares to private investors completely unnecessary.
"I'd like to see the flashy well-dressed mugs like Eddie Mars spoiling their manicures in the rock quarry at Folsom, alongside of the poor little slum-bred guys that got knocked over on their first caper and never had a break since.
This is basically used every time you see something really flashy, expensive or high quality combined with something cheap, simple and basic – that anywhere else would be incompatible but in Miami is totally normal.
She was 28 and had travelled all over Australia, but she liked it here and she definitely liked the look of the handsome Alice-born native in the flashy cowboy hat.
