| stand-in(replacement, alternative, alternate, backup, surrogate) |
| stand in |
| standby(supply, agent, replacement, alternative, alternate) |
| stopgap(supply, agent, replacement, alternative, alternate) |
| substitute(noun, replacement, alternative, someone, something) |
| succedaneum(supply, agent, replacement, alternative, alternate) |
| successor(replacement, alternative, alternate, backup, surrogate) |
| supplanter(supply, agent, replacement, alternative, alternate) |
| supply(agent, replacement, alternative, alternate, backup) |
| temp(supply, agent, replacement, alternative, alternate) |
| temporary(replacement, alternative, alternate, backup, surrogate) |
| temporary expedient(expression, supply, agent, replacement, alternate) |
| understudy(replacement, alternative, alternate, backup, surrogate) |
| vicar(supply, agent, replacement, alternative, alternate) |
| alternative(replacement, alternate) |
| ghostwriter(noun, author) |
| uncredited author |