Roman Catholicism

From Roman Catholic +‎ -ism.

Roman Catholicism

1. The beliefs or religion of the Roman Catholic Church.

• Catholicism (synonymous in most contexts); papalism, papism, papistry, popery, popishness, popism (all usually derogatory); (Romanity); compare also Roman Catholic [adj] § Synonyms and Roman Catholic [noun] § Synonyms

• catholicism