| substitute(noun, adjective, person, agent, substitute) |
| alternate(noun, adjective, person, thing, agent) |
| deputy(noun, adjective, person, thing, agent) |
| replacement(noun, person, thing, agent, substitute) |
| delegate(noun, person, thing, agent, replacement) |
| proxy(noun, adjective, person, thing, agent) |
| stand-in(noun, person, thing, agent, substitute) |
| representative(noun, adjective, person, thing, agent) |
| agent(noun, person, supply, agent, replacement) |
| understudy(noun, substitute, replacement, alternative, alternate) |
| fill-in(noun, person, thing, informal, substitute) |
| second(noun, extra, agent, substitute, other) |
| backup(noun, person, thing, agent, substitute) |
| alternative(noun, adjective, extra, substitute, other) |
| double(noun, substitute, replacement, alternative, alternate) |
| relief(noun, support, property, capital, substitute) |
| ersatz(extra, substitute, auxiliary, supernumerary) |
| lieutenant(noun, agent, substitute, deputy) |
| attorney(noun, agent, substitute, representative, operative) |
| emissary(noun, agent, substitute, representative, operative) |