intriguing

kiintoisa, kiinnostusta herättävä, mielenkiintoinen

jännittävä cause Causing a desire to know more; mysterious.
puhekieltä Having clandestine or illicit intercourse.
1839, Michael Ryan, Prostitution in London (page 83)

(..) few respectable women will now sit at a window, looking into the public street, or gaze at passengers in any large town or city; and no one does so at present, unless an innocent inexperienced, husband-hunting, flirtish, or intriguing person.

In all these negotiations, and caballings, and intriguings, the person most concerned, Frances Coke, the beauty and the heiress, was only the ball in the game.