fill-in

/ˈfɪlɪn/

/ˈfɪlɪn/

Definitions of fill-in

1. noun

   someone who takes the place of another (as when things get dangerous or difficult)
   synonyms: backup, backup man, relief, reliever, stand-in, substitute

   types:

   locum, locum tenens

   someone (physician or clergyman) who substitutes temporarily for another member of the same profession

   double, stunt man, stunt woman

   a stand-in for movie stars to perform dangerous stunts

   alternate, replacement, surrogate

   someone who takes the place of another person

   type of:

   compeer, equal, match, peer

   a person who is of equal standing with another in a group