不治

1. Origins, structure, and basic meaning

• Structure: 不治 is read ふじ and is a nominal expression for a condition that cannot be cured.
• Basic usage: It is mainly used with 病 for an incurable illness or when judging that a disease cannot be cured.

2. Common pitfalls and similar expressions

• Predicative form
  • Before a noun it takes の, as in 不治の病; as a predicate it appears as 不治だ.