τραχυφωνέω
From LSJ
μεγάλα ὠφελήσεσθε πρὸς ἱστορίαν τῶν κοινῶν → that will be of great benefit to you in order to understand public affairs
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.