| dummy(noun, extra, substitute, alternative, alternate) |
| rehabilitation(noun, return, improvement, restoration, overhaul) |
| representative(noun, extra, agent, substitute, assistant) |
| restoration(noun, return, improvement, substitute, compensation) |
| sub(noun, adjective, person, informal, reserve) |
| swap(noun, verb, change, talk, argument) |
| transposition(noun, change, talk, argument, transfer) |
| delegate(noun, agent, substitute, representative, assistant) |
| equivalent(substitute, alternative, alternate, backup, surrogate) |
| ersatz(extra, auxiliary, substitution, supernumerary) |
| makeshift(noun, help, shift, extra, substitute) |
| quid pro quo(expression, idiom, change, talk, argument) |
| refilling |
| reinstatement(noun, return, improvement, substitute, restoration) |
| renewal(noun, return, restoration, reestablishment, reinstatement) |
| return(noun, improvement, compensation, again, reestablishment) |
| second(noun, extra, substitute, auxiliary, supernumerary) |
| succedaneum(noun, alternative, alternate, backup, surrogate) |
| supplanting(noun, adjective, change, talk, argument) |
| changeling(alternative, alternate, backup, surrogate, substitution) |