συμβίωσις
From LSJ
ἤκουσεν ἐν Ῥώμῃ καὶ ἀρσένων ἑταιρίαν εἶναι → he heard that there was also a fellowship of males in Rome (Severius, commentary on Romans 1:27)
English (LSJ)
εως, ἡ,
A living with, companionship, Plb.5.81.2, etc.; μετά τινος Id.31.25.10; μετὰ φίλων Phld.Ir.p.78 W.; σ. θεοῦ ἔχειν LXX Wi.8.3; of wedded life, D.S.4.54, IG5(1).578.12 (Sparta), 1390.8 (Andania, i B.C.), BGU1102.10 (i B.C.), Vett.Val.1.17, etc.; περὶ γυναικὸς συμβιώσεως, title of work by Antipater of Tarsus, Stoic.3.254. 2 good fellowship, camaraderie, Cic.Att.13.23.1. II club, society, JHS54.75 (Smyrna), IG5(1).813 (loc. incert.).