Verb (5-dan, う, intransitive)
1.  to make war (on);  to wage war (against);  to go to war (with);  to fight (with);  to do battle (against)
esp. 戦う
2.  to compete (against)
esp. 戦う
3.  to struggle (against adversities, etc.);  to fight;  to contend;  to resist
esp. 闘う