οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → keeping silence is not shameful; speaking at random is (Menander)
νεφελοσύστατος: -ον, ὁ ἐκ νεφελῶν συνιστάμενος, Ψευδο- Ἀθαν. IV, 908B.