Stand-in
01
代役, スタンドイン
a person who replaces someone else briefly in doing their job while they are not available
例
The actor was sick, so the director asked the understudy to act as a stand-in for the rehearsal.
俳優が病気だったので、監督は代役にリハーサルの代役として演じるよう頼んだ。
