家贼难防 ( jiā zéi nán fáng )

词语解释

  1. 家贼难防 (jiāzéi-nánfáng)
    1. 家属或内部的人作弊营私难以防范 thief in the family is difficult to detect; a thief from within is hard to guard against;it is difficult to forestall a thief within the house

國語辭典

家賊難防 (jiā zéi nán fáng)
  1. 比喻內部的敵人或壞人最難防範。

    • 五燈會元.卷十四.同安志禪師法嗣:「問:『家賊難防時如何?』師曰:『識得不為冤。』」