noun
A strong will to fight, often used in sports, martial arts, or competitive contexts.
彼の闘魂がチームを勝利に導いた。
His fighting spirit led the team to victory.
どんなに苦しくても、闘魂を失わないでください。
No matter how hard it gets, don't lose your fighting spirit.
Compound of 闘 (fight) and 魂 (spirit). The exact historical derivation is uncertain, but the word is conventionally associated with a combative spirit.