εξαυγής

From LSJ

Καὶ τῶν λεγόντων εὖ καλὸν τὸ μανθάνειν → It is a fine thing to learn from those who speak well

Sophocles, Antigone, 722

Greek Monolingual

ἐξαυγής, -ές (Α) αυγή
λαμπερός, κατάλευκος («πώλων... χιόνος ἐξαυγενεστέρων», Ευρ.).