Polysyngeny 

An umbrella term for the practice of engaging in multiple relationships at once. This term includes polyamory, polyconcupiscence, and polyplatonic.

Origin: Poly- + Syngeny (derived from the Greek word "συγγένεια" or "syngéneia" meaning "relationship").

Polysyngeny is a hypernym containing polyamory and polyconcupiscence.

Polysyngeny by Shugunou June 19, 2023