FIDES FACTA fides facta (fI-deez fak-t[schwa]). [Latin] Hist. Faith-making; faith-pledging. ? Among the Franks and Lombards, certain transactions were guaranteed by symbolic, formal acts ¡ª making one’s faith ¡ª such as the giving of a rod when property was transferred. See FESTUCA. What is the Chinese interpretation of FIDES FACTA?