σφετερισμός
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
ὁ,
A appropriation, ἐπὶ σφετερισμῷ ἑαυτοῦ for one's own use and advantage, Arist.Rh.1374a16.
Greek (Liddell-Scott)
σφετερισμός: ὁ, τὸ σφετερίζεσθαι, ἰδιοποιεῖσθαι, ἐπὶ σφετερισμῷ ἑαυτοῦ, πρὸς ἰδίαν χρῆσιν καὶ ὠφέλειαν, Ἀριστ. Ρητορ. 1. 13, 10.