stand-in substitute relief reliever backup backup man fill-in
stand-in%1:18:00:: substitute%1:18:00:: relief%1:18:00:: reliever%1:18:01:: backup%1:18:00:: backup_man%1:18:00:: fill-in%1:18:00::
rezerva zamenjava dvojnik
someone who takes the place of another (as when things get dangerous or difficult)
the star had a stand-in for dangerous scenes we need extra employees for summer fill-ins