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operative

noun [C]
 
 
/ˈɒp.ər.ə.tɪv/ US  /ˈɑː.pɚ.ə.t̬ɪv/

Definition

formal a worker, especially one who is skilled in working with their hands: a factory operativeEmployees and colleagues mainly US a person who works secretly for an organization: a CIA operativeSpying and espionage
(Definition of operative noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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