papist -
an offensive term for Roman Catholics; originally, a Roman Catholic who was a strong advocate of the papacy
roman catholic the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy
derogation,
disparagement,
depreciation (law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law; "any derogation of the common law is to be strictly construed"
Papist is a term, usually disparaging or an anti-Catholic slur, referring to the Catholic Church, its teaching, practices or adherents. It was coined during the English Reformation to denote a Christian whose loyalties were to the Pope, rather than to the Church of England. Over time, however, it came to mean one who supported Papal authority over all Christians and thus became a popular term, especially among Anglicans and Presbyterians.