| augmentation(noun, extra, supplement, appendage, add-on) | |
| complement(noun, increase, extra, addition) | |
| continuation(noun, increase, extra, addition) | |
| extension(noun, increase, extra, addition, supplement) | |
| summational | |
| summative | |
| supplementary(adjective, addition) | |
| admixture | |
| component(noun, part, element, alloy, contaminant) | |
| constituent | |
| increment(noun, increase, extra, addition, supplement) | |
| incremental(adjective, additional) | |
| ingredient(noun, part, element, component, alloy) | |
| participative | |
| preserver(noun, preservation) | |
| reinforcement(noun, extra, supplement, appendage, add-on) | |
| rider(noun, increase, extra, addition) | |
| supplemental(adjective, addition) | |
| add | |
| add-on(noun, increase, extra, addition, ingredient) |
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| APA | Smart Define. (2015). additive thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/additive/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "additive thesaurus" https://smartdefine.org/additive/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, additive thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/additive/thesaurus/synonyms>. |
| MLA | Smart Define. "additive thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/additive/thesaurus/synonyms> |