μηνυτής
From LSJ
εὐκαταφρόνητός ἐστι σιγηρὸς τρόπος → a way of life disposed to silence is contemptible (Menander)
English (LSJ)
οῦ, Dor. μᾱνῡτάς, ᾶ, ὁ,
A bringing to light, μ. χρόνος E.Hipp.1051. II Subst., one who brings information, τοῖς μέλλουσιν ἀποθανεῖσθαι μ. γενέσθαι Lys.12.32, cf. Jul.Or.5.167b: mostly in legal sense, informer, Th.1.132, etc.; as epith. of Heracles, Vit.Soph; ἀδικήματος Antipho 2.2.5; μ. κατά τινος Id.5.24, And.1.19, Lys.13.2; κατὰ σαυτοῦ μ. ἐπὶ τοῖς συμβᾶσι γεγονώς D.18.284; τῶν ἀποκτεινάντων Antipho 2.4.3; of a woman, Cratin.428.