ἐξάγγελος

English (LSJ)

ὁ, ἡ,

   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.VS1.9.