Fides

From LSJ

λαγὼς τὸν περὶ τῶν κρεῶν δρόμον τρέχει → save one's bacon, save one's neck, save one's skin

Source

Latin > French (Gaffiot 2016)

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