不可告人 (bù kě gào rén) — not to be divulged; hidden (of secrets or ulterior motives)

Definition

A four-character set phrase meaning 'cannot be revealed to others' — almost always used attributively (不可告人的目的/勾当) to flag ulterior motives or shady dealings. Strongly negative in tone.

verb
not to be divulgedhidden (of secrets or ulterior motives)

Examples

  • 不可告人
    Tā yǒu shén me bù kě gào rén de mù dì?
    What ulterior motives does he have?
  • 不可告人
    Zhè jiā gōng sī cóng shì zhe yì xiē bù kě gào rén de gòu dàng.
    This company is engaged in some shady dealings.
  • 不可告人
    Bié zuò nà xiē bù kě gào rén de shì qing.
    Don't do those things that must be kept secret.

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