Princeton's WordNet

1. confidentiality(noun)

   the state of being secret

   "you must respect the confidentiality of your client's communications"

2. confidentiality(noun)

   discretion in keeping secret information

Wiktionary

1. confidentiality(Noun)

   The property of being confidential.

2. confidentiality(Noun)

   Something told in confidence; a secret.

U.S. National Library of Medicine

1. Confidentiality

   The privacy of information and its protection against unauthorized disclosure.

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