130 entries under additional topic. ×

4
appended(adjective, new, extra, added)
4
supernumerary(adjective, extraordinary, new, spare, fresh)
3
completing(adjective, completeness)
3
besides(adverb, preposition, bar, new, save)
3
perk(adjective, extraordinary, new, spare, fresh)
3
second(adjective, counterfeit, spare, near, reserve)
3
surplus(adjective, extraordinary, new, spare, fresh)
2
also(adverb, new, extra, greater)
2
farther(adjective, new, extra, replacement)
2
increased(adjective, new, extra, positive, replacement)
2
inessential(adjective, extraordinary, new, spare, fresh)
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, extra, secondary, subsidiary)
1
beyond(adjective, preposition, bar, extraordinary, new)
1
button(adjective, extraordinary, new, spare, fresh)
1
else(adjective, adverb, new, extra, replacement)
1
extraordinary(adjective, new, spare, fresh, special)
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APASmart Define. (2016). supplementary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/supplementary/thesaurus/synonyms
ChicagoSmart Define. 2016. "supplementary thesaurus" https://smartdefine.org/supplementary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, supplementary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/supplementary/thesaurus/synonyms>.
MLASmart Define. "supplementary thesaurus" 19 February 2016. Web. 24 September 2026. <https://smartdefine.org/supplementary/thesaurus/synonyms>