Οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → Silere non est turpe, sed frustra loqui → Nicht Schweigen schändet, sondern Schwätzen auf gut Glück
P. μῖλαξ, σμῖλαξ, ἡ (Plato) τάξος.
The word is also found in Eur., Bacchae 703, and Aristophanes, Nubes 1007, but apparently with a different meaning.