- Definitions|1
- Thesaurus|312
- Abbreviations|0
| establishment(firmness, rigidity, stiffness) | |
| exact | |
| excessive sternness(expression, idiom) | |
| explicitness | |
| extreme degree(expression, idiom) | |
| extreme strictness(expression, idiom) | |
| extremity | |
| fastness(firmness, rigidity, stiffness) | |
| faultlessness(noun, correctness, precision, accuracy, rigor) | |
| fine distinction(noun, expression, distinction, refinement, precision) | |
| fine point(noun, expression, distinction, refinement, precision) | |
| fineness | |
| fix(difficulty, laboriousness, strenuousness) | |
| flintiness | |
| frustration(difficulty, laboriousness, strenuousness) | |
| hazard(difficulty, laboriousness, strenuousness) | |
| hindrance(difficulty, laboriousness, strenuousness) | |
| hitch(difficulty, laboriousness, strenuousness) | |
| hot water(expression, difficulty, laboriousness, strenuousness) | |
| immobility(firmness, rigidity, stiffness) |
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| APA | Smart Define. (2015). rigorousness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rigorousness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigorousness thesaurus" https://smartdefine.org/rigorousness/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, rigorousness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rigorousness/thesaurus/synonyms>. |
| MLA | Smart Define. "rigorousness thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/rigorousness/thesaurus/synonyms> |