ἄμβροτος
From LSJ
ἀμήχανον δὲ παντὸς ἀνδρὸς ἐκμαθεῖν ψυχήν τε καὶ φρόνημα καὶ γνώμην, πρὶν ἂν ἀρχαῖς τε καὶ νόμοισιν ἐντριβὴς φανῇ → hard it is to learn the mind of any mortal or the heart, 'till he be tried in chief authority | it is impossible to know fully any man's character, will, or judgment, until he has been proved by the test of rule and law-giving
English (LSJ)
ον, also η, ον Pi.Fr.75.17, Tim.Fr.7: (v. βροτός):— poet. Adj.
A immortal, divine, of persons as well as things, θεὸς ἄ. Il. 20.358, Od.24.445, Pi.N.10.7; θεά A.Eu.259 (lyr.); ἄμβροτε Φάμα, of an oracle, S.OT158 (lyr.). 2 epith. of all belonging to the gods, αἷμα Il.5.339; ἵπποι 16.381; τεύχεα 17.194, κρήδεμνον Od.5.347; ἱστός 10.222; νύξ 11.330:—also Pythag., = five, Theol.Ar.32.