Showy and flashy in a way meant to impress others, often appearing arrogant or in bad taste.
From Latin 'ostentare' (to display), related to 'ostensus' (shown). The English adjective emerged in the 17th century with connotations of vulgarity.
Rich people who want respect often go understated on purpose—luxury goods companies now market 'quiet luxury' because ostentatious displays actually signal insecurity in modern culture.
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