| fake |
| fill-in(replacement, alternative, alternate, backup, surrogate) |
| locum(supply, agent, replacement, alternative, alternate) |
| locum tenens(expression, supply, agent, replacement, alternate) |
| makeshift(supply, agent, replacement, alternative, alternate) |
| phony |
| pinch-hitter(replacement, alternative, alternate, backup, surrogate) |
| procurator(supply, agent, replacement, alternative, alternate) |
| proxy(supply, agent, replacement, alternative, alternate) |
| recourse(supply, agent, replacement, alternative, alternate) |
| refuge(supply, agent, replacement, alternative, alternate) |
| relay(supply, agent, replacement, alternative, alternate) |
| relief(replacement, alternative, alternate, backup, surrogate) |
| replacement(alternative, alternate, backup, surrogate) |
| representative(supply, agent, replacement, alternative, alternate) |
| reserve(replacement, alternative, alternate, backup, surrogate) |
| resort(supply, agent, replacement, alternative, alternate) |
| resource(supply, agent, replacement, alternative, alternate) |
| ringer |
| scribe |