σφέτερος 1 possessive adj. of 3rd pers. pl. σφείς
I.their own, their, Lat. suus, Hom., etc; strengthd., αὐτῶν σφετέρῃσιν ἀτασθαλίῃσιν Od.;—in Prose, the gen. ἑαυτῶν is more common, but σφέτερος occurs in Thuc., etc.; τὸ σφέτερον their own feelings, their own business, id=Thuc., Plat.; οἱ σφέτεροι their own people, Thuc.
II.in Poets sometimes of other persons:
2.of 2nd sg., = σός, thine own, tuus, Theocr.
3.of 1st sg., = ἐμός, mine own, meus, id=Theocr.
4.of the 1st pl., = ἡμέτερος, our own, noster, Xen.