| dependent(adjective, relational) | |
| needless(adjective, extraordinary, new, spare, fresh) | |
| non-essential | |
| redundant(adjective, extraordinary, new, spare, fresh) | |
| reserve(adjective, increase, extraordinary, new, spare) | |
| subservient(adjective, useful, minor, helpful, secondary) | |
| supervenient | |
| surplus(adjective, extraordinary, new, spare, fresh) | |
| unnecessary(adjective, extraordinary, new, spare, fresh) | |
| unneeded(adjective, extraordinary, new, spare, fresh) | |
| accessory excess(expression, extraordinary, new, spare, fresh) | |
| accidental | |
| accumulative | |
| adjective | |
| adjoining(adjective, accompanying) | |
| adorning(adjective, accompanying) | |
| affiliated(adjective, relational) | |
| affixed(adjective, accompanying) | |
| akin(adjective, relational) | |
| analogous(adjective, relational) |
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| APA | Smart Define. (2015). supplemental thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/supplemental/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "supplemental thesaurus" https://smartdefine.org/supplemental/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, supplemental thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/supplemental/thesaurus/synonyms>. |
| MLA | Smart Define. "supplemental thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/supplemental/thesaurus/synonyms> |