This is the 3755th most frequent Japanese word.
たたかう
"たたかう" means "to fight" or "to combat."
In this sentence, 'たたかう' is used metaphorically to describe someone's effort and struggles against challenges.
彼は困難とたたかっています。
He is fighting against difficulties.
Here, 'たたかう' is employed to indicate competing or striving in a sporting or competitive context.
選手たちは優勝のためにたたかう。
The players fight to win the championship.
This instance of 'たたかう' refers to physically battling or engaging in warfare.