- Definitions|0
- Thesaurus|538
- Abbreviations|0
73 entries under adjective topic. ×
| untenable(quality, weakness, instability, unfounded) | |
| indefensible(quality, weakness, invalid, instability) | |
| unjustifiable(quality, weakness, instability, defended) | |
| unverifiable(quality, weakness, true, real) | |
| groundless(quality, weakness, instability, defended) | |
| unmaintainable(quality, weakness, instability) | |
| insupportable(support, quality, weakness, true) | |
| implausible(quality, weakness, instability) | |
| unmanageable(quality, weakness, instability) | |
| unsanctionable(quality, weakness, instability) | |
| fleeting(quality, weakness, instability) | |
| temporary(quality, weakness, instability) | |
| unendurable(quality, weakness, instability) | |
| unfeasible(quality, weakness, instability) | |
| unsuitable(quality, weakness, instability) | |
| unviable(quality, weakness, instability) | |
| unworkable(quality, weakness, instability) | |
| unfounded(quality, weakness, instability, defended) | |
| brief(quality, weakness, instability) | |
| unsound(quality, weakness, instability, defended) |
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| APA | Smart Define. (2015). unsustainable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unsustainable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unsustainable thesaurus" https://smartdefine.org/unsustainable/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, unsustainable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unsustainable/thesaurus/synonyms>. |
| MLA | Smart Define. "unsustainable thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/unsustainable/thesaurus/synonyms> |