Synonyms of stand in

Noun

1. stand-in, substitute, relief, reliever, backup, backup man, fill-in, peer, equal, match, compeer

usage: 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"

Verb

1. substitute, sub, stand in, fill in, exchange, change, interchange

usage: be a substitute; "The young teacher had to substitute for the sick colleague"; "The skim milk substitutes for cream--we are on a strict diet"