Synonyms for Overblown (same or very similar meaning)
WordNet sense 1 (puffed up with vanity):
grandiloquent, pompous, pontifical, portentous
WordNet sense 2 (making claim to or creating an appearance of (often undeserved) importance or distinction):
pretentious
WordNet sense 3 (having reached full natural growth or development):
mature
From the ODE community, based on WordNet
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