77 entries under noun topic. ×

10
addition(increase, extra, enlargement, ingredient)
6
extra(increase, addition, ingredient, supplement)
6
supplement(increase, extra, addition, ingredient)
5
accessory(extra, addition, supplement, appendage)
5
addendum(increase, extra, addition, supplement)
4
adjunct(increase, extra, addition, supplement)
4
annex(increase, extra, addition, supplement)
4
appendage(increase, extra, addition, supplement)
4
increase(extra, addition, supplement, appendage)
4
preservative(adjective, ingredient, supplement, preservation)
3
accession(extra, supplement, appendage, add-on)
3
accompaniment
3
attachment(extra, supplement, appendage, add-on)
3
augmentation(extra, supplement, appendage, add-on)
3
complement(increase, extra, addition)
3
continuation(increase, extra, addition)
3
extension(increase, extra, addition, supplement)
2
admixture
2
component(part, element, alloy, contaminant)
2
increment(increase, extra, addition, supplement)
11 years ago|3.4k views|share |citing 
APASmart Define. (2015). additive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/additive/thesaurus/synonyms
ChicagoSmart Define. 2015. "additive thesaurus" https://smartdefine.org/additive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, additive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/additive/thesaurus/synonyms>.
MLASmart Define. "additive thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/additive/thesaurus/synonyms>