(n.) A woman of doubtful reputation or suspected character; an adventuress.

Aspasia Delilah Jezebel Messalina Phryne Thais adventurer brazenface courtesan daredevil demimondaine demimonde demirep devil femme fatale fire-eater harem girl harum-scarum hellcat hetaera hotspur houri madbrain madcap odalisque rantipole seductress temptress vamp vampire wild man