τραχυφωνέω
From LSJ
σιγᾶν ἄμεινον ἢ λαλεῖν ἃ μὴ πρέπει → it's better to keep silence than to say what's not appropriate (Menander)
English (LSJ)
pronounce with rough sound, Eust. 1598.27 (Pass.).
Greek (Liddell-Scott)
τρᾰχῠφωνέω: προφέρω τραχέως, λείως μὲν λαλεῖται τὸ λύειν, τραχυφωνεῖται δὲ τὸ ῥηγνύειν Εὐστ. 1598. 27.