παρακαθῆσθαι

From LSJ

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

Source

Greek > English (Woodhouse Verbs Reversed)

(see also κάθημαι): set next to, sit by a person

Lexicon Thucydideum

assidere, to sit at, besiege, 6.13.1.