stand in

/ˈstænd ɪn/
noun
  1. A person who takes the place of another, especially temporarily or in a performance.
    • The actor was sick, so a stand-in performed the scene for lighting tests.
    • She worked as a stand-in for the lead actress during rehearsals.
    • When the manager was on vacation, a stand-in handled the daily operations.
  2. Something used as a substitute for another thing.
    • This toy car is just a stand-in until the real part arrives.
    • We used a cardboard box as a stand-in for a table at the picnic.
    • The old bridge served as a stand-in for the ruined castle in the film.
Antonyms