Synonyms for Pompous (same or very similar meaning)
WordNet sense 1 (characterized by pomp and ceremony and stately display):
ceremoniousWordNet sense 2 (puffed up with vanity):
grandiloquent, overblown, pontifical, portentousWordNet sense 3 (making claim to or creating an appearance of (often undeserved) importance or distinction):
pretentiousFrom the ODE community, based on WordNetadd/edit