126 entries under extra topic. ×

3
second(adjective, counterfeit, spare, near, reserve)
3
standby(adjective, increase, auxiliary, supernumerary)
3
surplus(adjective, extraordinary, new, spare, fresh)
2
also(adverb, new, additional, greater)
2
backup(noun, adjective, support, increase, counterfeit)
2
farther(adjective, new, replacement, additional)
2
increased(adjective, new, positive, replacement)
2
inessential(adjective, extraordinary, new, spare, fresh)
2
nonessential(secondary, subsidiary, related, irrelevant)
2
optional(adjective, extraordinary, new, spare, fresh)
2
reserve(adjective, support, increase, extraordinary, new)
2
superfluous(adjective, extraordinary, new, spare, fresh)
1
accessory excess(expression, extraordinary, new, spare, fresh)
1
accompanying(adjective, additional, secondary, subsidiary)
1
beyond(adjective, preposition, bar, extraordinary, new)
1
button(adjective, extraordinary, new, spare, fresh)
1
else(adjective, adverb, new, replacement)
1
extraordinary(adjective, new, spare, fresh, special)
1
fuss(adjective, extraordinary, new, spare, fresh)
1
gingerbread(adjective, extraordinary, new, spare, fresh)
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APASmart Define. (2016). supplementary thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/supplementary/thesaurus/synonyms
ChicagoSmart Define. 2016. "supplementary thesaurus" https://smartdefine.org/supplementary/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, supplementary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/supplementary/thesaurus/synonyms>.
MLASmart Define. "supplementary thesaurus" 19 February 2016. Web. 25 September 2026. <https://smartdefine.org/supplementary/thesaurus/synonyms>