polyamorous

Etymology
From a 1990 article by Morning Glory Zell-Ravenheart, "A Bouquet of Lovers", from en.

Adjective

 * 1) Having relationships with multiple partners, with the knowledge and consent of all involved; engaging in polyamory.
 * 2) Open to having such relationships, regardless of one's experience or current practices.

Translations

 * Esperanto: pluramema
 * Finnish: polyamorinen, monisuhteinen
 * French:
 * German: ,
 * Hungarian: tártszerelmű
 * Italian:
 * Spanish: poliamoroso