Meaning : Of momentous or ominous significance.
Example :
Such a portentous...monster raised all my curiosity.
A prodigious vision.
Synonyms : prodigious
Meaning : Ominously prophetic.
Synonyms : fateful, foreboding
Meaning : Puffed up with vanity.
Example :
A grandiloquent and boastful manner.
Overblown oratory.
A pompous speech.
Pseudo-scientific gobbledygook and pontifical hooey.
Synonyms : grandiloquent, overblown, pompous, pontifical