Main entry: overblown, pompous, pontifical, portentous, grandiloquent
Definition: puffed up with vanity
Usage: a grandiloquent and boastful manner; overblown oratory; a pompous speech; pseudo-scientific gobbledygook and pontifical hooey- Newsweek
Main entry: foreboding, fateful, portentous
Definition: ominously prophetic
Main entry: prodigious, portentous
Definition: of momentous or ominous significance
Usage: such a portentous...monster raised all my curiosity- Herman Melville; a prodigious vision