Demirep

he had no knowledge of that character which is vulgarly called a demirep; that is to say, a woman who intrigues with every man she likes, under the name and appearance of virtue [...] in short, whom everybody knows to be what nobody calls her.

Madam by this Time Lady Brittle is the Talk of half the Town—and I doubt not in a week the Men will toast her as a Demirep.

[…] in short, this delightful, blissful, wise, pleasurable, honourable, virtuous, true, and immortal prince, was a violator of his word, a libertine, over head and ears in disgrace, a despiser of domestic ties, the companion of gamblers and demireps […] .

[…] the greater part of our confessions (that is, spontaneous and extra-judicial confessions) proceed from demireps, adventurers, or swindlers […].

With the mincing step of a demirep / Some sidled up the stairs […].

In this new world, ruled by charlatans and dominated by demireps, Talleyrand may have found much to shock his sense of decorum, but little to outrage his moral standards.