51 entries under toughness topic. ×
| stability(noun, law, support, control, honor) | |
| firmness(noun, support, control, honor, character) | |
| constancy(noun, support, control, run, character) | |
| endurance(noun, support, control, honor, character) | |
| solidity(noun, law, support, control, character) | |
| steadiness(noun, support, control, character, strength) | |
| persistence(noun, character, strength, trait, resolution) | |
| soundness(noun, support, control, character, strength) | |
| fastness(noun, support, control, character, strength) | |
| strength(noun, support, control, character, trait) | |
| substantiality(noun, law, support, control, character) | |
| robustness(noun, character, strength, trait, firmness) | |
| hardness(noun, support, control, character, strength) | |
| durability(noun, support, control, time, strength) | |
| steadfastness(noun, support, control, strength, balance) | |
| imperishability(noun, character, strength, trait, will) | |
| resoluteness(noun, support, control, character, strength) | |
| lastingness(noun, strength, resolution, fortitude, stamina) | |
| staying power(noun, expression, strength, resolution, fortitude) | |
| solidness(noun, support, control, strength, balance) |
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| APA | Smart Define. (2015). permanence thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/permanence/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "permanence thesaurus" https://smartdefine.org/permanence/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, permanence thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/permanence/thesaurus/synonyms>. |
| MLA | Smart Define. "permanence thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/permanence/thesaurus/synonyms> |