- Definitions|1
- Thesaurus|119
- Abbreviations|0
| adjuvant(reserve, subsidiary, supportive) | |
| ancillary(extra, auxiliary, supernumerary) | |
| another(extra, auxiliary, supernumerary) | |
| appurtenant(reserve, subsidiary, supportive) | |
| artificial(extra, auxiliary, supernumerary) | |
| auxiliary(reserve, extra, subsidiary, supernumerary, supportive) | |
| backup(reserve, extra, subsidiary, auxiliary, supernumerary) | |
| bogus | |
| characteristic | |
| chemical | |
| dummy(extra, auxiliary, supernumerary) | |
| emergency(reserve, subsidiary, supportive) | |
| experimental(extra, auxiliary, supernumerary) | |
| extra(auxiliary, supernumerary) | |
| fake | |
| imitation(extra, auxiliary, supernumerary) | |
| in excess(expression, reserve, subsidiary, supportive) | |
| in reserve(expression, reserve, subsidiary, supportive) | |
| in store(expression, reserve, subsidiary, supportive) | |
| interchangeable |
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| APA | Smart Define. (2013). substitutive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/substitutive/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "substitutive thesaurus" https://smartdefine.org/substitutive/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2013, substitutive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/substitutive/thesaurus/synonyms>. |
| MLA | Smart Define. "substitutive thesaurus" 17 June 2013. Web. 27 September 2026. <https://smartdefine.org/substitutive/thesaurus/synonyms> |