杳无音信 (yǎo wú yīn xìn) — to have no news whatsoever; to be completely without information (about someone)

Definition

Examples

• 他出国后便杳无音信，家人非常担心。
  Tā chū guó hòu biàn yǎo wú yīn xìn, jiā rén fēi cháng dān xīn.
  After he went abroad, there was no news from him at all, and his family was very worried.
• 这封信寄出半年了，至今杳无音信。
  Zhè fēng xìn jì chū bàn nián le, zhì jīn yǎo wú yīn xìn.
  This letter was sent half a year ago, and there has been no news of it so far.
• 他们失去联系多年，杳无音信，仿佛人间蒸发。
  Tā men shī qù lián xì duō nián, yǎo wú yīn xìn, fǎng fú rén jiān zhēng fā.
  They lost contact for years with no news at all, as if they had vanished from the face of the earth.