Meaning : Entrusted with private information and the confidence of another.
Example :
A confidential secretary.
Meaning : (of information) given in confidence or in secret.
Example :
This arrangement must be kept confidential.
Their secret communications.
Synonyms : secret
Meaning : Denoting confidence or intimacy.
Example :
A confidential approach.
In confidential tone of voice.
Meaning : The level of official classification for documents next above restricted and below secret. Available only to persons authorized to see documents so classified.