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English definition of “confidential”

confidential

adjective     /ˌkɒn.fɪˈden.ʃəl/ US  /ˌkɑːn-/
C1 secret, often in a formal, business, or military situation: All information will be treated as strictly confidential.Secrecy and privacy confidentially     /-i/ adverb Can I speak to you confidentially? All information supplied will be treated confidentially.Secrecy and privacy
(Definition of confidential adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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