In a way that shows off or displays something ostentatiously; done in a manner meant to attract attention.
From 'flaunt' + '-y' + '-ly' (adverb suffix). Transforms the adjective 'flaunt' into an adverbial form describing how an action is performed.
Adding '-ly' to adjectives to create adverbs is one of the most productive word-building patterns in English, which is why we can instantly understand words we've never seen before—our brains understand the formula!
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