Confidentiality

[,kɒnfɪ,denʃɪ'ælɪtɪ] or [,kɑnfɪ,dɛnʃɪ'æləti]

(noun.) discretion in keeping secret information.

(noun.) the state of being secret; 'you must respect the confidentiality of your client's communications'.

Editor: Michel--From WordNet