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English definition of “arcane”

arcane

adjective     /ɑːˈkeɪn/ US  /ɑːr-/ formal
mysterious and known only by a few people: He was the only person who understood all the arcane details of the agreement. This argument may seem arcane to those not closely involved in the world of finance.Difficult to understandComplicated and difficult to doPuzzle and confuse
(Definition of arcane adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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