闘志

1. Origins, structure, and basic meaning

• Structure: 闘志 is read as とうし and means “fighting spirit”.
• Basic usage: It denotes fighting spirit that survives a setback and is kindled by an opponent’s performance.

2. Common pitfalls and similar expressions

• 闘志が消えない / 闘志に火をつける
  • Use 闘志が消えない for persistence and the idiom 闘志に火をつける for kindling determination.