81 entries under firmness topic. ×
| stick-to-itiveness(noun, strength, temper, determination, resolution) | |
| acerbity(rigidity, stiffness) | |
| adherence(noun, support, control, honor, strength) | |
| aplomb(noun, support, control, strength, temper) | |
| assurance(noun, support, control, strength, spirit) | |
| balance(noun, support, control, strength) | |
| boldness(noun, strength, spirit, determination, courage) | |
| dependability(noun, support, control, honor, strength) | |
| establishment(noun, support, control, strength, balance) | |
| fastness(noun, support, control, strength, balance) | |
| hardness(noun, support, control, strength, balance) | |
| inflexibility(noun, rigidity, stiffness) | |
| maturity(noun, support, control, strength, balance) | |
| pith(noun, power, strength, ability, determination) | |
| security(noun, support, control, strength, desire) | |
| solidness(noun, support, control, strength, balance) | |
| stableness(noun, support, control, strength, balance) | |
| stomach(noun, strength, spirit, determination, courage) | |
| substantiality(noun, support, control, person, body) | |
| support(noun, control, strength, spread, balance) |
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| APA | Smart Define. (2016). endurance thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/endurance/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "endurance thesaurus" https://smartdefine.org/endurance/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, endurance thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/endurance/thesaurus/synonyms>. |
| MLA | Smart Define. "endurance thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/endurance/thesaurus/synonyms> |