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.
(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."
pretension, affectation
pomp, pomposity, splendor
firstly, ostentation has to do with d pretentiousness display of a particular thing. Eg article,etc. Now article of ostentation could be defined as d extravagant consumption or extravagant usage of a particular commodity. One of d article of ostentation could be tagged as extravagant spending.
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a sentence with the word variety