noun
A formal one-on-one fight, often with weapons, or a competitive match between two opponents. Used in historical, gaming, and sports contexts.
彼はデュエルで相手を倒した。
He defeated his opponent in a duel.
このゲームでは、プレイヤー同士がデュエルで対戦する。
In this game, players face each other in duels.