confidentially

UK: /ˌkɒnfɪˈdɛnʃəli/

WordReference Random House Learner's Dictionary of American English © 2025

con•fi•den•tial /ˌkɑnfɪˈdɛnʃəl/   adj. 

1. spoken, written, or acted on in secret:
   Your personal file is confidential.
2. indicating or showing private or secret matters:
   spoke in confidential tones.
3. entrusted with secrets or private affairs:
   [before a noun] He is my confidential secretary.

con•fi•den•ti•al•i•ty /ˌkɑnfɪˌdɛnʃiˈælɪti/  n. 

[uncountable] The confidentiality of the client will be respected.

con•fi•den•tial•ly, adv. See -fid-.

WordReference Random House Unabridged Dictionary of American English © 2025

con•fi•den•tial  (kon′fi den′shəl), adj. 

1. spoken, written, acted on, etc., in strict privacy or secrecy;
   secret:
   a confidential remark.
2. indicating confidence or intimacy;
   imparting private matters:
   a confidential tone of voice.
3. having another's trust or confidence;
   entrusted with secrets or private affairs:
   a confidential secretary.
4. Government (of information, a document, etc.)
   • bearing the classification confidential, usually being above restricted and below secret.
   • limited to persons authorized to use information, documents, etc., so classified. Cf. classification (def. 5).

• Latin confīdenti(a) confidence + -al¹
• 1645–55

con′fi•den′ti•al′i•ty, con′fi•den′tial•ness, n. 
con′fi•den′tial•ly, adv. 
Synonyms

• 1. restricted, private.
• 2. intimate, familiar.
• 3. trusted, trustworthy, private. See familiar.