What is the meaning of Fides?

faith, belief (belief without empirical evidence, direct experience, or observation)

reliance (act of relying on or trusting)

confidence, trust (confidence in or reliance on some person or quality)

credit (acceptance of the truth of something said or done)

loyalty, fidelity, faith (state of demonstrating undivided and constant support for someone or something)

good faith (good, honest intentions)

honesty (act, quality, or condition of being honest)

guarantee, promise (an assurance of something to be done)

lyre, lute, harp (any of a number of ancient stringed musical instruments)

Source: wiktionary.org

See also