ἐγνωσμένως
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.
Spanish (DGE)
adv. sobre el part. perf. med.-pas. de γιγνώσκω con conocimiento, con razón ἐ. ἀπὸ τῶν παρακολουθούντων εἰς τὸν ζῳδιακὸν κατέρχεται Sch.Arat.167, cf. Gr.Cor.de comp.105.