You know what it looks like… but what is it called?
TAKE THE QUIZ“Fidei”
The following 4 entries include the term Fidei.
confessio fidei
Latin noun phrase: confession of faith
Fidei Defensor
Latin noun phrase: Defender of the Faith —a title of the sovereigns of England
actio bonae fidei
noun: an action in Roman law giving great power to the trial judge to take all matters of good faith, conscience, and equity into consideration of the whole case —contrasted with actio stricti juris