ξένῳ δὲ σιγᾶν κρεῖττον ἢ κεκραγέναι → it's better for a stranger to keep silence than to shout (Menander)
pf. Pass. de ἐξελέγχω.
ἐξελήλεγμαι: pf. pass. к ἐξελέγχω.