補ほ助じょ参さん加か人にん

noun

auxiliary intervenor

Legal term for a third party who participates in a lawsuit to support one side, without being a direct plaintiff or defendant.

• 補ほ助じょ参さん加か人にんは、当とう事じ者しゃの一いっ方ぽうを勝かたせるために訴そ訟しょうに加くわわる。

  An auxiliary intervenor joins a lawsuit to help one of the parties win.