| extraneous(adjective, extraordinary, new, spare, fresh) | |
| adjunct(noun, adjective) | |
| another(adjective, extraordinary, new, spare, fresh) | |
| appended(adjective, new, extra, additional, added) | |
| collateral(adjective, low, subject, useful, minor) | |
| substitute(adjective, extra, alternative, auxiliary, supernumerary) | |
| supernumerary(adjective, extraordinary, new, spare, fresh) | |
| adscititious(adjective, addition) | |
| completing(adjective, additional, completeness) | |
| annexed | |
| ascititious(addition, completeness) | |
| attached | |
| besides(adverb, preposition, bar, new, save) | |
| contributory(adjective, support, low, inferior, subject) | |
| incidental | |
| minor(adjective, low, inferior, useful, helpful) | |
| perk(adjective, extraordinary, new, spare, fresh) | |
| second(adjective, counterfeit, spare, near, reserve) | |
| standby(adjective, increase, extra, auxiliary, supernumerary) | |
| supportive |
For more, visit
Supplementary on
Power Thesaurus
| APA | Smart Define. (2016). supplementary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/supplementary/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "supplementary thesaurus" https://smartdefine.org/supplementary/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, supplementary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/supplementary/thesaurus/synonyms>. |
| MLA | Smart Define. "supplementary thesaurus" 19 February 2016. Web. 24 September 2026. <https://smartdefine.org/supplementary/thesaurus/synonyms> |