ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → either say something better than silence or keep silence (Menander)
impĕdĭto: (inp-), āre, v. freq. a. id.,I to hinder, impede: numero, Stat. Th. 2, 590.