108 entries under extra topic. ×

4
further(adjective, extraordinary, new, spare, fresh)
4
new(adjective, extraordinary, spare, fresh, special)
4
proxy(noun, agent, replacement, alternative)
4
representative(noun, adjective, associate, reserve)
4
standby(noun, adjective, increase, spare, supply)
4
supernumerary(adjective, extraordinary, new, spare, fresh)
4
supplement(noun, part, addition, extension)
4
surplus(adjective, extraordinary, new, spare, fresh)
3
another(adjective, extraordinary, new, spare, fresh)
3
emergency(noun, adjective, increase, spare, reserve)
3
more(adjective, extraordinary, new, spare, fresh)
3
perk(adjective, extraordinary, new, spare, fresh)
3
surrogate(noun, copy, supply, agent)
2
accompanying(adjective, subordinate, additional, secondary)
2
added(adjective, extraordinary, new, spare, fresh)
2
alternative(new, replacement, additional, alternate)
2
dummy(noun, supply, agent, replacement)
2
extension(noun, part, addition, decoration)
2
farther(adjective, new, replacement, additional)
2
inessential(adjective, extraordinary, new, spare, fresh)
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APASmart Define. (2015). auxiliary thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/auxiliary/thesaurus/synonyms
ChicagoSmart Define. 2015. "auxiliary thesaurus" https://smartdefine.org/auxiliary/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, auxiliary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/auxiliary/thesaurus/synonyms>.
MLASmart Define. "auxiliary thesaurus" 22 December 2015. Web. 25 September 2026. <https://smartdefine.org/auxiliary/thesaurus/synonyms>