A.“σιγῇς” Ar.Ach.778; Cyrenaic inf. “σιγέν” Berl.Sitzb. 1927.170; 1sg. opt. σιγῷμ(ι) E.Hipp.336: fut. “-ήσομαι” S.OC113, 980, E.Ba.801, Ar.Av.1684, etc.; later “-ήσω” AP9.27 (Arch. or Parmen.), D.Chr.37.42, Charito 1.10: pf. “σεσίγηκα” Aeschin.3.218:— Pass., fut. “σιγηθήσομαι” E.IT1076; “σεσιγήσομαι” Pl.Ep.311c: aor. “ἐσιγήθην” E.Supp.298, Aeschin.2.86: pf. σεσίγημαι (v. infr.): (σιγή):— keep silence, used by Hom. only in imper. σίγα, hush! be still! Il.14.90, Od.17.393; “σιγᾶν” h.Merc.93, Hdt.8.61,110; but freq.in Pi., Trag., and Att., as Pi.N.10.29, A.Pr.200, etc.; “ς. περί τινος” E.Hipp.312; “πρὸς οὓς δεῖ” Pl.Phdr.276a; πρὸς τοῦτο, ἐν τούτῳ, X.Cyr.5.5.20, An.5.6.27.
2. metaph. of things, “σιγῶν δ᾽ ὄλεθρος καὶ μέγα φωνοῦντ᾽ . . ἀμαθύνει” A.Eu.935 (anap.); “σύριγγες οὐ σιγῶσιν” Id.Supp.181; “σίγησε δ᾽ αἰθήρ” E.Ba.1084; “ς. πόντος, ς. ἀῆται, ἁ δ᾽ ἐμὰ οὐ ς. ἀνία” Theoc.2.38:—in E.Fr.781.13, τὰ σιγῶντ᾽ ὀνόματ᾽ . . δαιμόνων seems to be = τὰ ἄρρητα, secret, mystical:—Pass., μέμψομαι σιωπὴν ὡς ἐσιλγήθη κακῶς I shall impute as a fault that silence was kept, Id.Supp.298; also τί σεσίγηται δόμος Ἀδμήτου; why is it all silent? Id.Alc.78; σιγῶντα λέγειν, λέγοντα σιγᾶν, phrases illustrating a logical fallacy, Pl.Euthd. 300b, Arist.SE166a13.