| appendage(noun, addition, accessory, attachment, limb) |
| complementary(adjective, support, spare, extra, joint) |
| flunky(noun, useful, assistant, secondary) |
| fresh(adjective, extraordinary, new, spare, special) |
| helper(noun, assistant) |
| helpful(adjective, aid, useful, minor, secondary) |
| helping |
| inconsequential |
| kindred(adjective, collateral, attendant, congeneric, relational) |
| more(adjective, extraordinary, new, spare, fresh) |
| new(adjective, extraordinary, spare, fresh, special) |
| other(adjective, extraordinary, new, spare, fresh) |
| proxy(noun, extra, assistant, auxiliary, supernumerary) |
| relief(inferior, minor, subordinate) |
| spare(adjective, support, extraordinary, new, fresh) |
| standby(extra, substitute, auxiliary, supernumerary) |
| supernumerary(adjective, extraordinary, new, spare, fresh) |
| tributary(adjective, low, inferior, subject, minor) |
| trivial(inferior, minor, subordinate) |
| vicarious(inferior, extra, minor, subordinate, auxiliary) |