亂臣賊子 [乱－贼－]

Jyutping lyun6 san4 caak6 zi2
Pinyin luàn chén zéi zǐ

Definitions (CC-CEDICT)
  1. rebels and traitors (idiom)
  2. general term for scoundrel
Definitions (Wiktionary)
  1. phrase, idiomatic
    rebellious minister disloyal to the monarch