Ostentatious is when you show off. Here are some sentences.
It could be opulence or ostentation.
Ostentation (an excessively showy exhibition) can have these synonyms based on the context : pretentiousness, gaudiness, pomp, affectation, or garishness.
frippery = ostentation
a group of animals
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A flock of peacocks and peahens is called a Party.
pretension, affectation
(ostentatious: intended to attract notice and impress others, or a display that is tawdry or vulgar)"At Mardi Gras, the streets of the French Quarter are filled with revelers in ostentatious costumes.""He considered society functions to be an ostentatious display of wealth."
pomp, pomposity, splendor
Well, darling, an "article of ostentation" is just a fancy term for a showy or flashy object used to display wealth or status. Think of it as that over-the-top diamond necklace or designer handbag that screams, "Look at me, I've got money to burn!" It's basically a way for people to flaunt their riches without saying a word.
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a sentence with the word variety