δημηγορέω
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)
A practise speaking in the assembly, Ar.Eq.956, etc.; πρὸ τοῦ πολιτεύεσθαι καὶ δ. ἐμέ D.18.60; δ. περί τινος Lys.14.45; δ. πρός τινας Pl.Lg.817c; ἐν τοῖς ὄχλοις Arist.Fr.83: c. acc. cogn., δ. καὶ συνηγορεῖν λόγους D.19.15; δ. λόγον παρά τισι Id.23.110:—Pass., τὰ δεδημηγορημένα public speeches, Id.19.9. II esp. make popular speeches, use clap-trap, ταῦτα δημηγορεῖς Pl.Grg.482c: abs., ib.503b, Tht.162d, R.350e; τῶν δημηγοριῶν ὧν δ. D.21.202; δ. πρὸς χάριν, πρὸς ἡδονήν, Id.3.3,4.38, cf. Hermog.Meth.1.