κεκρατημένως
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)
Adv., (κρατέω)
A in a masterly manner, ἀποδεδωκέναι Hipparch.1.8.11, cf. Phld.Po.5.26, 29. 2 vigorously, v.l. in D.H. Comp.25. 3 positively, S.E.M.11.42.