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Clandestine operation
/klandˈɛstɪn ˌɒpəɹˈeɪʃən/
/klændˈɛstɪn ˌɑːpɚɹˈeɪʃən/
Clandestine operation
01
an intelligence operation so planned and executed as to insure concealment
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an intelligence operation so planned and executed as to insure concealment