3
accumulative
3
alternative(adjective, place, lower, new, inferior)
3
attached(adjective, accompanying, attached)
3
besides(adjective, adverb, new, extra, greater)
3
companion(adjective, accompanying)
3
complementary
3
contributory
3
larger(adjective, new, extra, greater, supplementary)
3
needless(adjective, extraordinary, new, spare, fresh)
3
non-essential
3
odd(adjective, unusual, strange, spare, reserve)
3
redundant(adjective, extraordinary, new, spare, fresh)
3
renewed(adjective, new, replacement, other)
3
unessential
3
unneeded(adjective, extraordinary, new, spare, fresh)
2
add
2
alternate(adjective, extra, auxiliary, supernumerary)
2
amalgamated
2
appended(adjective, extra, supplementary, added)
2
ascititious
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APASmart Define. (2015). additional thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/additional/thesaurus/synonyms
ChicagoSmart Define. 2015. "additional thesaurus" https://smartdefine.org/additional/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, additional thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/additional/thesaurus/synonyms>.
MLASmart Define. "additional thesaurus" 30 July 2015. Web. 22 September 2026. <https://smartdefine.org/additional/thesaurus/synonyms>