42 entries under extra topic. ×

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mock(auxiliary, supernumerary)
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near(auxiliary, supernumerary)
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other(new, auxiliary, supernumerary)
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proxy(auxiliary, supernumerary)
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pseudo(auxiliary, supernumerary)
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replacement(auxiliary, supernumerary)
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representative(auxiliary, supernumerary)
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reserve(auxiliary, supernumerary)
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second(auxiliary, supernumerary)
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sham(auxiliary, supernumerary)
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simulated(auxiliary, supernumerary)
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spurious(auxiliary, supernumerary)
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standby(auxiliary, supernumerary)
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substitutive(auxiliary, supernumerary)
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supernumerary
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supplemental(auxiliary, supernumerary)
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supplementary(auxiliary, supernumerary)
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supposititious(auxiliary, supernumerary)
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surrogate(auxiliary, supernumerary)
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symbolic(auxiliary, supernumerary)
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APASmart Define. (2015). experimental thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/experimental/thesaurus/synonyms
ChicagoSmart Define. 2015. "experimental thesaurus" https://smartdefine.org/experimental/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, experimental thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/experimental/thesaurus/synonyms>.
MLASmart Define. "experimental thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/experimental/thesaurus/synonyms>