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English definition of “authoritative”

authoritative

adjective     /ɔːˈθɒr.ɪ.tə.tɪv/ US  /əˈθɔːr.ɪ.t̬ə.t̬ɪv/
showing that you are confident , in control , and expect to be respected and obeyed : She has an authoritative manner that at times is almost arrogant .Controlling and being in charge containing complete and accurate information , and therefore respected : The book is an authoritative account of the Second World War .Accurate and exact authoritatively     /-li/ adverb Accurate and exactControlling and being in charge
(Definition of authoritative adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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