περισσὰ δρᾶν
From LSJ
ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → either say something better than silence or keep silence (Menander)
Greek > English (Woodhouse)
be interfering, be officious, be over busy, do more than is necessary, waste one's labor, waste one's labour