σεμνομυθεῖν
From LSJ
εἰς τετρημένον πίθον ἀντλεῖν → run water into a punctured pitcher, to the perforated jar bale water, labour in vain, labor in vain
Greek > English (Woodhouse Verbs Reversed)
(see also: σεμνομυθέω, σεμνομυθῶ) speak pompously, talk pompously, talk sententiously, talk solemnly