Definition: (adjective) Marked by pompousness; pretentiously weighty.
Synonyms: overblown, pompous, grandiloquent, pontifical.
Usage: His hands, large and coarse, were plentifully bedecked with rings; and he wore a heavy gold watch-chain, with a bundle of seals of portentous size, and a great variety of colors, attached to it.
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Source: The Free Dictionary