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English definition of “wiretapping”

wiretapping

noun [U] uk   /ˈwaɪəˌtæp.ɪŋ/ us    /ˈwaɪr-/
the action of secretly listening to other people's conversations by connecting a listening device to their phone: If he suspected an employee of dishonesty, he was not above wiretapping.Spying and espionage
(Definition of wiretapping from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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