ὑπερφθέγγομαι
From LSJ
ὡς οὐ δικαίως θάνατον ἔχθουσιν βροτοί, ὅσπερ μέγιστον ῥῦμα τῶν πολλῶν κακῶν → since unjustly men hate death, which is the greatest defence against their many ills
English (LSJ)
A speak louder than, τὰ ἔργα ὑ. τοὺς λόγους Luc. Tox.35; τῷ λόγῳ ὑπερφθέγγονται τὴν ἀλήθειαν they shout down the truth, Gal.8.808, cf. UP8.2; εὐεπείᾳ τὸν Ὅμηρον ὑ. excel Homer therein, Plu.2.396d.