Minxes, noun plural of minx. Synonyms in the same form.
Coquette
coquettes, flirts, teases, vamps, vampers
Hussy
hussies, floozies, scamps, ruffians, tarts, mischiefs, punks, jades, hooligans, hoodlums, mischief-makers, chippies, trulls, trollops, rascals, tramps, courtesans, buggers, prostitutes, knaves, rogues
Other
jack-a-napeses, malaperts
All synonyms for minx →