| substitute(noun, verb, adjective, person, change) |
| alternate(noun, adjective, person, cover, subject) |
| inferior(adjective, low, minor, secondary, lesser) |
| submarine(noun, snack, torpedo, sandwich) |
| stand in(verb, expression, phrasal verb, change, cover) |
| subject(adjective, low, inferior, minor, secondary) |
| subordinate(adjective, inferior, sensitive, agent, apt) |
| surrogate(noun, person, thing, agent, substitute) |
| collateral(adjective, low, inferior, subject, secondary) |
| fill-in(noun, adjective, informal, reserve, substitute) |
| fill in(verb, expression, phrasal verb, change, cover) |
| grinder(noun, snack, torpedo, submarine) |
| pigboat |
| replacement(noun, adjective, person, reserve, agent) |
| backup(noun, adjective, reserve, agent, substitute) |
| hoagie(noun, snack, torpedo, grinder, submarine) |
| minor(adjective, low, subordinate, secondary, lesser) |
| pinch-hit(verb, phrasal verb, informal, substitute) |
| secondary(adjective, low, inferior, sensitive, minor) |
| subaltern(noun, low, subject, sensitive, minor) |