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English definition of “bumptious”

bumptious

adjective     /ˈbʌmp.ʃəs/ disapproving
unpleasantly confident: a bumptious young manShowing arrogance and conceitConfidence and self-assuranceBoasting bumptiously /-li/ adjective bumptiousness     /-nəs/ noun [U]
(Definition of bumptious adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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