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English definition of “au fait”

au fait

adjective     /ˌəʊˈfeɪ/ US  /ˌoʊ-/
be au fait with sth to be familiar with or know about something: Are you au fait with the rules of the game ?Foreign words and phrases used in EnglishAware
(Definition of au fait adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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