200 entries under noun topic. ×
| fastness(support, control, change, strength) | |
| flintiness | |
| knottiness | |
| mercilessness | |
| numbness | |
| obdurateness | |
| onerousness | |
| oppression(misery, hardship, cruelty, domination) | |
| ordeal(difficulty, severity, harshness, conformity) | |
| relentlessness(harshness, sternness) | |
| rigidness | |
| rigourousness | |
| savagery | |
| steadiness(support, control, change, strength) | |
| substantiality(support, control, strength, balance) | |
| sureness(support, control, change, strength) | |
| abrasiveness | |
| adversity(difficulty, toughness) | |
| badness | |
| clumsiness |
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| APA | Smart Define. (2015). hardness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hardness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hardness thesaurus" https://smartdefine.org/hardness/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, hardness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hardness/thesaurus/synonyms>. |
| MLA | Smart Define. "hardness thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/hardness/thesaurus/synonyms> |