Open English Wordnet
Adjectives
(s)grandiloquent, magniloquent, talllofty in style“he engages in so much tall talk, one never really realizes what he is saying”
(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)