- Definitions|2
- Thesaurus|1k
- Abbreviations|0
81 entries under hardness topic. ×
| strength(noun, support, control, go, force) | |
| sturdiness(noun, health, support, control, force) | |
| firmness(noun, health, support, control, force) | |
| hardness(noun, support, control, power, strength) | |
| rigidity(noun, easy, condition, discipline, firmness) | |
| solidity(noun, support, control, strength, balance) | |
| callousness(noun, insensitivity) | |
| difficulty(noun, difficulty, discipline, strictness) | |
| durability(noun, health, support, control, force) | |
| stiffness(noun, difficulty, firmness, protection, security) | |
| temper(noun, protection, security, rigidity) | |
| stability(noun, health, support, control, force) | |
| arduousness(noun, difficulty, discipline, strictness) | |
| complication(noun, difficulty) | |
| resistance(noun, spirit, firmness, protection, security) | |
| soundness(noun, health, support, control, force) | |
| strenuousness(noun, difficulty, tedium, arduousness) | |
| adversity(noun, difficulty) | |
| density(noun, protection, security, rigidity) | |
| impenetrability(noun, protection, security, rigidity) |
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| APA | Smart Define. (2015). toughness thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/toughness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "toughness thesaurus" https://smartdefine.org/toughness/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, toughness thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/toughness/thesaurus/synonyms>. |
| MLA | Smart Define. "toughness thesaurus" 21 December 2015. Web. 27 September 2026. <https://smartdefine.org/toughness/thesaurus/synonyms> |