ἐωνήμην

From LSJ

ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → either say something better than silence or keep silence (Menander)

Source

Russian (Dvoretsky)

ἐωνήμην: ppf. к ὠνέομαι.