κωφάω
From LSJ
ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do
English (LSJ)
(κωφός)
A make dumb, silence, πᾶσαν ἰωήν Opp.C.3.286:— Pass., grow dumb or deaf, become stupid, ὑπ' ἀπαιδευσίας κεκωφημένος Clearch.6. II generally, maim, injure, Hsch.