battle, contest
もう合戦は嫌か
Have you had enough of war?
— 七人の侍 (1954)
自分の傑作をめぐって入札合戦になる、と彼は確信していた。
He was certain there would be a bidding war over his masterpiece.
「買い手が二人いるから、入札合戦になるぞ」
There are two buyers, so this is going to turn into a bidding war.
入札合戦になるんだ。
It’s going to turn into a bidding war.