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English definition of “operative”

operative

adjective (in use)    /ˈɒp.ər.ə.tɪv/ US  /ˈɑː.pɚ.ə.t̬ɪv/ formal
working or being used: The agreement will not become operative until all members have signed. → Opposite inoperativeFunctioningPerforming a function
(Definition of operative adjective (in use) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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