机要 (jī yāo) — (attributive) confidential, top-secret (used before nouns in official contexts)

Definition

Examples

• 这些是机要文件，不能随便看。
  Zhè xiē shì jī yāo wén jiàn, bù néng suí biàn kàn.
  These are confidential documents; you can't just look at them.
• 他在机要部门工作，负责保密工作。
  Tā zài jī yāo bù mén gōng zuò, fù zé bǎo mì gōng zuò.
  He works in a confidential department, responsible for secrecy work.
• 机要信息必须妥善保管。
  jī yāo Xìn xī bì xū tuǒ shàn bǎo guǎn.
  Confidential information must be properly kept.

Origin