Meaning

noun a strong belief in a supernatural power or powers that control human destiny

noun complete confidence in a person or plan etc

noun an institution to express belief in a divine power

originFrom Middle English faith (also fay), borrowed from Old French fei, feid, from Latin fidem. Doublet of foy. Displaced native Old English ġelēafa, which was also a word for belief. * Old French had [θ] as a final devoiced allophone of /ð/ from lenited Latin /d/; this eventually fell silent in the 12th century. The -th of the Middle English forms is most straightforwardly accounted for as a direct…

Etymology from Wiktionary, CC BY-SA 3.0