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operative

adjective
 
 
/ˈɒp.ər.ə.tɪv/ US  /ˈɑː.pɚ.ə.t̬ɪv/ formal

Definition

working or being used: The agreement will not become operative until all members have signed. → Opposite inoperativeFunctioningPerforming a function
(Definition of operative adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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