- grandiloquent, overblown, pompous, pontifical, portentous - puffed up with vanity; "a grandiloquent and boastful manner"; "overblown oratory"; "a pompous speech"; "pseudo-scientific gobbledygook and pontifical hooey"- Newsweek
Antonym: unpretentious (indirect, via pretentious)
- overblown - past the stage of full bloom; "overblown roses"
Antonym: immature (indirect, via mature)