κοινὸν τύχη, γνώμη δὲ τῶν κεκτημένων → good luck is anyone's, judgment belongs only to those who possess it
εὔσκοπος, ἐΰσκοπος, ἐπίσκοπος, ἀστεῖος, ὠκυσκόπος, βέβαιος, εὔθικτος, εὔστοχος, ἐΰστοχος, εὔθηρος, εὔμετρος