σκυθρωπασμός
From LSJ
ἀπορράπτειν τὸ Φιλίππου στόμα ὁλοσχοίνῳ ἀβρόχῳ → sew up Philip's mouth with an unsoaked rush, stop Philip's mouth with an unsoaked rush, shut one's mouth without any trouble
English (LSJ)
ὁ,
A sadness of countenance, [τῶν φιλοσόφων] Plu.2.43f, cf. 378f.
German (Pape)
[Seite 906] ὁ, zorniges, mürrisches, trauriges Ansehen, finstere, betrübte Miene, Plut. de audit. 7.