Definitions

1. adjective

resembling or characteristic of a flapper (a young woman with a fashionable and often unconventional style, especially in the 1920s)

“Her flapperish attitude and behavior shocked her conservative grandmother.”

2. noun

a young woman with a fashionable and often unconventional style, especially in the 1920s

“She was a quintessential flapper, known for her love of jazz and her short skirts.”