WordNet sense 1 (lofty in style):

magniloquent, tall

WordNet sense 2 (concerned with effect or style of writing and speaking):

rhetorical

WordNet sense 3 (puffed up with vanity):

overblown, pompous, pontifical, portentous

WordNet sense 4 (making claim to or creating an appearance of (often undeserved) importance or distinction):

pretentious