intended to be kept secret 保密的;机密的 confidential information. 机密情报。 we won't name the informant because it's confidential. 我们不会说出提供消息者的名字,因为这是保密的。 ■(of a person's tone of voice) indicating that what one says is private or secret (语气)表示所言是保密的;私下的 he dropped his voice to a confidential whisper. 他压低嗓音,用隐秘的口吻窃窃私语。 ■[attrib.]entrusted with private or restricted information: 受到信任的;因受到信任而了解机密的;被视为心腹的 a confidential secretary. 机要秘书。