44 entries under reasonable topic. ×
| tenable(adjective, sound, rational, defended) | |
| defendable(adjective, sound, rational, defended) | |
| defensible(adjective, sound, rational, defended) | |
| justifiable(adjective, sound, rational, defended) | |
| arguable(adjective, sound, rational, justified) | |
| believable(adjective, sound, rational, conceivable) | |
| credible(adjective, sound, rational, conceivable) | |
| plausible(adjective, sound, rational) | |
| rational(adjective, sound, conceivable, tenable) | |
| excusable(adjective, sound, rational, justified) | |
| reliable(sound, rational) | |
| secure(sound, rational) | |
| strong(sound, rational) | |
| trustworthy(sound, rational) | |
| viable(adjective, sound, rational, conceivable) | |
| acceptable(sound, rational, justified, defensible) | |
| admissible(justified, defensible) | |
| allowable(justified, defensible) | |
| condonable(sound, rational, justified, defensible) | |
| correct(justified, defensible) |
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| APA | Smart Define. (2015). maintainable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/maintainable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "maintainable thesaurus" https://smartdefine.org/maintainable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, maintainable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/maintainable/thesaurus/synonyms>. |
| MLA | Smart Define. "maintainable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/maintainable/thesaurus/synonyms> |