From Longman Dictionary of Contemporary Englishsassysas‧sy /ˈsæsi/ adjective American English 1 RUDE/IMPOLITEa child who is sassy is rude to someone they should respect SYN cheeky British English2 ATTRACTsomeone, especially a woman, who is sassy is confident and does not really care what other people think about her SYN feisty
Examples from the Corpus
sassy• His Farrow is smart, sassy and sexy, a woman who has learned how to turn her disability into an asset.• She was sassy and smart, and all the kids liked her.• a sassy brat• Her public image is that of a sassy mystic, but she has the showbiz mastery of a Gloria Swanson.• What Ida Rebecca saw was a frail little creature with her hair cut in the sassy new pageboy bob.• The three journalists who interviewed Putin for this book were pleasingly sassy on occasion.• Becky was a sassy, rambunctious New York girl he'd met when visiting his aunt.• She looked sassy, she thought, as she swung her long jet hair, careful not to dislodge the jasmine.Origin sassy (1800-1900) saucy 