eavesdropper
From LSJ
Χρηστοῦ παρ' ἀνδρὸς χρὴ σοφόν τι μανθάνειν → Doceat te oportet vir probus sapientiam → Von einem Fachmann eigne dir was Weises an
English > Greek (Woodhouse)
substantive
spy: P. and V. κατάσκοπος, ὁ.
be an eavesdropper, v.: P. ὠτακουστεῖν.