THESAURUS
concubine
better half, bondmaid, bondman, bondslave, bondsman, bondswoman, captive, chattel, chattel slave, churl, common-law wife, debt slave, doxy, feme, feme covert, galley slave, goodwife, goody, helot, helpmate, helpmeet, homager, kept mistress, kept woman, lady, liege, liege man, liege subject, married woman, matron, mistress, odalisque, old lady, old woman, paramour, peon, playmate, rib, serf, servant, slave, squaw, subject, theow, thrall, unofficial wife, vassal, villein, wedded wife, wife, woman
ROGET THESAURUS
concubine
Libertine
N
libertine, voluptuary, rake, debauchee, loose fish, rip, rakehell, fast man, intrigant, gallant, seducer, fornicator, lecher, satyr, goat, whoremonger, paillard, adulterer, gay deceiver, Lothario, Don Juan, Bluebeard, chartered libertine, adulteress, advoutress, courtesan, prostitute, strumpet, harlot, whore, punk, fille de joie, woman, woman of the town, streetwalker, Cyprian, miss, piece, frail sisterhood, demirep, wench, trollop, trull, baggage, hussy, drab, bitch, jade, skit, rig, quean, mopsy, slut, minx, harridan, unfortunate, unfortunate female, unfortunate woman, woman of easy virtue, wanton, fornicatress, Jezebel, Messalina, Delilah, Thais, Phryne, Aspasia, Lais, lorette, cocotte, petite dame, grisette, demimonde, chippy, sapphist, spiritual wife, white slave,
concubine, mistress, doxy, chere amie, bona roba, pimp, procurer, pander, pandar, bawd, conciliatrix, procuress, mackerel, wittol.