confidential
🇺🇸
/ˌkɑːnfɪˈdenʃl/
🇬🇧
/ˌkɒnfɪˈdenʃl/
meant to be kept secret and not shared with others
This confidential document must not be shown to anyone else.
showing that something is private or secret
She gave me a confidential look before sharing the secret.
trusted with private or secret information
As a confidential assistant, she handles all private matters.