ὑπερφθέγγομαι
From LSJ
εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
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.