βροντόφωνος
From LSJ
μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
German (Pape)
[Seite 465] mit Donnerstimme, Sp.
Spanish (DGE)
-ον de voz atronadora Chry.Hie.Enc.Io.B.3(p.33.14).