闘う

1. Origins, structure, and basic meaning

• Structure: The godan intransitive verb 闘う (たたかう) means fighting an opponent or struggling against illness or adversity.
• Basic usage: The opponent takes と in 病と闘う, and simultaneous action is linked with 闘いながら.

2. Common pitfalls and similar expressions

• Fighting an opponent or hardship
  • It extends beyond physical combat to sustained effort against hardship.