ἐξάγγελος

A. messenger who brings out news from within: hence, one who betrays a secret, informer, ἐ. γίγνεται ὡς . . Th. 8.51; ἐ. γίγνεσθαί τινος Pl. Lg. 964e, etc.

II. on the Greek stage, messenger who told what was doing in the house or behind the scenes (opp. ἄγγελος, who told news from a distance); first used by Aeschylus, Philostr. VS 1.9.