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English definition of “know-all”


noun [C]     /ˈnəʊ.ɔːl/ US  /ˈnoʊ.ɑːl/ UK informal disapproving (US know-it-all)
a person who thinks that they know much more than other people Showing arrogance and conceitConfidence and self-assuranceBoastingUnpleasant people in generalUnpleasant men
(Definition of know-all noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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