polyamorous

/P AA0 L IY0 AE1 M ER0 AH0 S/
adjective
  1. 1

    Having relationships with multiple partners, with the knowledge and consent of all involved; engaging in polyamory.

  2. 2

    Open to having such relationships, regardless of one's experience or current practices.

Source: https://en.wiktionary.org/wiki/polyamorous