Definitions

1. adjective

showing the greatest amount of style or glamour, typically in a way that is considered impressive or attention-grabbing

“The flashiest new smartphone on the market has been selling out fast.”

2. noun

the most stylish or glamorous person or thing, especially in a way that is considered impressive or attention-grabbing

“At the party, she was the flashiest of them all, wearing an extravagant outfit.”