opponent

She shook hands with her opponent after the match.

彼女は試合の後、対戦相手と握手した。

The politician acknowledged that her opponent had raised some valid points during the debate.

その政治家は、討論中に相手が有効な指摘をしたことを認めた。

He studied his opponent's playing style carefully before the chess tournament began.

チェストーナメントが始まる前に、彼は対戦相手の棋風を注意深く研究した。