二枚舌

1. Origins, structure, and basic meaning

• Structure: 二枚舌(にまいじた) criticizes duplicitous speech that changes inconsistently with the listener.
• Basic usage: It is used for changing one's story to please both sides or losing trust through such behavior.

2. Common pitfalls and similar expressions

• The combined reading of 舌
  • 舌(した), meaning tongue, is read as じた in this word. The complete reading is therefore 二枚舌(にまいじた).