ἐπικυρόω
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)
A confirm, sanction, ratify, τὴν γνώμην Th.3.71, cf.S.El. 793, X.An.3.2.32, D.15.34, SIG167.20, etc.: c.inf., τίνες . . λόγοι καθεῖλον ἡμᾶς κἀπεκύρως αν θανεῖν; E.Or.862:—Pass., πρίν τι ἐπικυρωθῆναι Th.5.45; ἐπικυρωθέντων τῶν νόμων Arist.Ath.37.1, cf. Sammelb. 1161.17 (i B.C.).