Fides

From LSJ

φθείρουσιν ἤθη χρήσθ' ὁμιλίαι κακαί → bad company ruins good habits

Source

Latin > French (Gaffiot 2016)

(2) Fĭdēs,¹² ĕī, f., la Bonne Foi [personn.] : Cic. Off. 3, 104, etc.