Synonyms|204Antonyms|45|Broader|0Narrower|1Related|437
1
unused(adjective, extraordinary, new, spare, fresh)
0
accession
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accessional
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accompaniment
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acting(extra, auxiliary, supernumerary)
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addition
0
adjecadded
0
adjectitious
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affix
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aide
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alternate(extra, auxiliary, supernumerary)
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alternative(extra, additional, auxiliary, another, supernumerary)
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annex
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annexation
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annexed
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appended
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appendix
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artificial(extra, auxiliary, supernumerary)
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ascicompleting
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assist
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APASmart Define. (2015). supplemental thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/supplemental/thesaurus/synonyms
ChicagoSmart Define. 2015. "supplemental thesaurus" https://smartdefine.org/supplemental/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, supplemental thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/supplemental/thesaurus/synonyms>.
MLASmart Define. "supplemental thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/supplemental/thesaurus/synonyms>