同どう席せき者しゃ

noun

companion; fellow attendee; person sitting next to one

Refers to someone who shares the same seat, table, or attendance at an event. The specific nuance depends on context: a companion at a gathering, a fellow participant, or simply the person seated beside you.

• 会かい議ぎでは、隣となりの同どう席せき者しゃと名めい刺しを交こう換かんした。

  At the meeting, I exchanged business cards with the person sitting next to me.

• 結けっ婚こん式しきの同どう席せき者しゃと楽たのしく話はなした。

  I enjoyed talking with my fellow attendees at the wedding reception.