Definition of boastful
: given to or marked by boasting : expressing excessive self-pride
a vain, boastful man A few of the … parents are downright boastful about their sons.— Jane Gross … journalists who are only too willing to take at face value the boastful pronouncements of the company's publicity department.— Jeffrey Young At the highest levels, the administration's response to the crisis has been sluggish, characterized by boastful rhetoric but stagnant funding. — The Washington Post
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Merriam-Webster unabridged
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Time Traveler for boastful
The first known use of boastful was in the 14th century
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