103 entries under toughness topic. ×
| permanence(noun, support, control, strength, balance) | |
| harshness(noun, power, abuse, easy, difficulty) | |
| rigidity(noun, easy, condition, discipline, firmness) | |
| severity(noun, power, abuse, easy, difficulty) | |
| rigor(noun, easy, condition, discipline, firmness) | |
| stiffness(noun, firmness, protection, severity, security) | |
| austerity(noun, easy, condition, discipline, firmness) | |
| firmness(noun, support, control, change, strength) | |
| rigorousness(noun, easy, condition, discipline, firmness) | |
| solidity(noun, support, control, strength, balance) | |
| difficulty(noun, difficulty, discipline, severity, harshness) | |
| strength(noun, support, control, change, continue) | |
| arduousness(noun, difficulty, discipline, strictness) | |
| inflexibility(noun, firmness, protection, severity, security) | |
| stringency(noun, easy, condition, discipline, firmness) | |
| sturdiness(noun, support, control, change, strength) | |
| grimness(noun, discipline, firmness, severity, harshness) | |
| hardship(noun, abuse, difficulty, misery, suffering) | |
| soundness(noun, support, control, change, strength) | |
| stability(noun, support, control, change, strength) |
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| APA | Smart Define. (2015). hardness thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hardness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hardness thesaurus" https://smartdefine.org/hardness/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, hardness thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hardness/thesaurus/synonyms>. |
| MLA | Smart Define. "hardness thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/hardness/thesaurus/synonyms> |