noun
a boastful action or speech; boast
verb
to boast or brag about one's own achievements or possessions
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He did not vaunt his achievements, preferring instead to let his work speak for itself.
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She loves to vaunt about her new car to anyone who will listen.
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Stop vaunting about your grades, no one cares.
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The peacock vaunted its colorful plumage, displaying it proudly for all to see.