Synonyms|527Antonyms|111|Broader|20Narrower|54Related|356

62 entries under auxiliary topic. ×

3
substitute(noun, verb, extra, supernumerary)
3
second(noun, adjective, spare, inferior, extra)
2
alternate(noun, verb, adjective, inferior, extra)
2
another(adjective, extraordinary, new, spare, fresh)
2
complementary(adjective, support, spare, extra, joint)
2
other(adjective, extraordinary, new, spare, fresh)
2
proxy(noun, extra, assistant, supernumerary)
2
spare(adjective, support, extraordinary, new, fresh)
2
standby(extra, substitute, supernumerary)
2
supernumerary(adjective, extraordinary, new, spare, fresh)
2
vicarious(inferior, extra, minor, subordinate)
1
backup(noun, adjective, support, spare, inferior)
1
reserve(adjective, support, extraordinary, new, spare)
1
subsidary(adjective, subject, extra, collateral, attendant)
1
surrogate(noun, extra, supernumerary)
0
abetting(adjective, support, spare, supplementary)
0
acting(extra, supernumerary)
0
alternative(extra, additional, another, supernumerary)
0
artificial(extra, supernumerary)
0
counterfeit(extra, supernumerary)
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APASmart Define. (2015). ancillary thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/ancillary/thesaurus/synonyms
ChicagoSmart Define. 2015. "ancillary thesaurus" https://smartdefine.org/ancillary/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, ancillary thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/ancillary/thesaurus/synonyms>.
MLASmart Define. "ancillary thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/ancillary/thesaurus/synonyms>