42 entries under extra topic. ×

4
substitute(adjective, reserve, alternative, subsidiary)
1
alternate(reserve, substitute, subsidiary, auxiliary)
1
alternative(adjective, auxiliary, supernumerary, back-up)
1
counterfeit(adjective, auxiliary, supernumerary)
1
ersatz(adjective, auxiliary, supernumerary)
1
false(adjective, auxiliary, supernumerary)
1
makeshift(auxiliary, supernumerary)
1
mock(adjective, auxiliary, supernumerary)
1
representative(adjective, auxiliary, supernumerary)
1
simulated(adjective, auxiliary, supernumerary)
1
spurious(adjective, auxiliary, supernumerary)
1
vicarial(reserve, substitute, subsidiary, auxiliary)
1
vicarious(adjective, substitute, auxiliary, supernumerary)
0
acting(auxiliary, supernumerary, back-up, flipside)
0
additional(auxiliary, supernumerary)
0
ancillary(auxiliary, supernumerary)
0
another(auxiliary, supernumerary)
0
artificial(auxiliary, supernumerary)
0
auxiliary(reserve, subsidiary, supernumerary, supportive)
0
backup(reserve, subsidiary, auxiliary, supernumerary)
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APASmart Define. (2013). substitutive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/substitutive/thesaurus/synonyms
ChicagoSmart Define. 2013. "substitutive thesaurus" https://smartdefine.org/substitutive/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2013, substitutive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/substitutive/thesaurus/synonyms>.
MLASmart Define. "substitutive thesaurus" 17 June 2013. Web. 27 September 2026. <https://smartdefine.org/substitutive/thesaurus/synonyms>