φαιδρόω

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

Source

German (Pape)

[Seite 1250] 1) reinigen, klar, glänzend machen. – 2) übertr., erheitern, u. pass. fröhlich, heiter sein, Xen. Cyr. 2, 2, 16.

French (Bailly abrégé)

-ῶ :
faire briller de joie, rendre radieux.
Étymologie: φαιδρός.