#vatican
- Aggiornamento — A process of renewal, adaptation, and modernization of an institution, doctrine, or mindset to the demands, realities, and mentality of the contemporary world. The term became globally famous during the Second Vatican Council, defining the opening of the Catholic Church toward dialogue with modernity without altering its core dogmatic values.
- Allegri — An Italian family name of European renown, famous in cultural history especially through Gregorio Allegri (1582–1652), a baroque composer and Catholic priest, author of the famous sacred choral work 'Miserere mei, Deus'. Additionally, the name is widely known in the contemporary sports world due to the Italian football manager Massimiliano Allegri.
- Anti-Catholic — Opposing Catholicism, the Roman Catholic Church, papal dogmas, or institutional structures; a theological, political, or social attitude characteristic of Protestant, Reformed, or secular and nationalist movements. As a noun, it defines a person or polemicist who critiques or fights against the authority and doctrines of the Vatican.
- Antipope — A person elected illegally or uncanonically to the office of pope of the Roman Catholic Church, in opposition to the officially recognized, legitimate sovereign pontiff. This historical phenomenon usually emerged during periods of religious schism or major political conflicts between the papacy and the empire, when various rival factions disputed supreme spiritual authority.