鬼退治

1. Origins, structure, and basic meaning

• Structure: 鬼退治 is read おにたいじ and means defeating an oni, or ogre.
• Basic usage: It is used when villagers ask a hero to defeat an ogre or children perform that story as a puppet show.

2. Common pitfalls and similar expressions

• Component meanings and readings
  • 鬼(おに) means an oni, or ogre, and 退治(たいじ) means defeating or getting rid of something harmful.