My letter to you is confidential. Use it in reference to something that is secret or private. I want you to keep the letter in the strictest confidence.
The documents were confidential.
"It is confidential to give your verdict". "It is confidential to say your answer".
The company has strict policies in place to ensure legitimate access to confidential information.
He was told that the information was confidential so he did not mention it to anyone else.
When an envelope is marked, "confidential", we're not authorized to open it; give it directly to the manager.
I was not privy to the details of the confidential meeting.
The word confidential is an adjective. The adverb form is confidentially.
"It is important to keep your real name and address confidential when using social networking sites such as Facebook and Twitter."
It is important to respect the propriety of the workplace by maintaining professional behavior at all times.
With the confidential garrulity of a man who has dined too well, he plunged into his darling topic, and I looked past him at the clock
Justin Bieber's personal email address is confidential because it is for his family and close friends to use. He may have an email address for fans to use, and he certainly has an official mailing address for fans. Can you imagine what it would be like for him if his personal email address was not confidential?
confidential