Nouns

(n)pontificalthe vestments and other insignia of a pontiff (especially a bishop)

Adjectives

(a)papal, apostolic, apostolical, pontificalproceeding from or ordered by or subject to a pope or the papacy regarded as the successor of the Apostles“papal dispensation”
(a)episcopal, pontificaldenoting or governed by or relating to a bishop or bishops
(s)grandiloquent, overblown, pompous, pontifical, portentouspuffed up with vanity“a grandiloquent and boastful manner”, “overblown oratory”, “a pompous speech”, “pseudo-scientific gobbledygook and pontifical hooey” (Newsweek)