zero-sum

ze ro-sum ▶adjective [ attrib. ] (of a game or situation ) in which whatever is gained by one side is lost by the other: altruism is not a zero-sum game.

zero-sum

zero-sum ▶adjective [ attrib. ] (of a game or situation ) in which whatever is gained by one side is lost by the other.

zero-sum game

z è ro-s ú m g à me 名詞 C 〖通例単数形で 〗ゼロサムゲーム 〘参加者の得失 損益の和が常にゼロになるゲーム 状況 〙.