大だい乱らん戦せん

noun

battle royal; large-scale free-for-all

Refers to a chaotic, large-scale fight involving many participants, often with no clear sides or rules. Used in sports, games, or metaphorical contexts.

• 試し合あいは最さい後ごに大だい乱らん戦せんになり、観かん客きゃくは大だい興こう奮ふんだった。

  The match turned into a huge free-for-all at the end, and the crowd was thrilled.

• ゲーム内ないで大だい乱らん戦せんが発はっ生せいし、誰だれが敵てきか味み方かたかわからなくなった。

  A battle royal broke out in the game, and it became impossible to tell friend from foe.