WordWeb Online

1. Someone who takes the place of another (as when things get dangerous or difficult)
   "the star had a stand-in for dangerous scenes"
   - substitute, relief, reliever, backup, backup man, fill-in

1. Be a substitute
   "The young teacher had to stand in for the sick colleague"
   - substitute, sub, fill in

Derived forms: standing in, stands in, stood in, stand-ins

Type of: change, compeer, equal, exchange, interchange, match, peer

Encyclopedia: Stand in