meaning of portentous
1. Of the nature of a portent; containing portents; foreshadowing, esp. foreshadowing ill; ominous.
2. Hence: Monstrous; prodigious; wonderful; dreadful; as, a beast of portentous size.
3. puffed up with vanity; "a grandiloquent and boastful manner"; "overblown oratory"; "a pompous speech"; "pseudo-scientific gobbledygook and pontifical hooey"- Newsweek
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