81 entries under firmness topic. ×
| spunk(noun, drive, power, strength, energy) | |
| heart(noun, power, strength, energy, spirit) | |
| moxie(noun, activity, go, drive, power) | |
| pluck(noun, go, power, strength, energy) | |
| steadiness(noun, support, control, strength, balance) | |
| cohesion(noun, support, control, strength, balance) | |
| solidity(noun, support, control, strength, balance) | |
| soundness(noun, support, action, control, go) | |
| starch(noun, go, power, strength, energy) | |
| sturdiness(noun, support, control, strength, energy) | |
| nerve(noun, power, strength, spirit, dash) | |
| courageousness(strength, spirit, dash, determination, courage) | |
| fearlessness(noun, power, strength, spirit, dash) | |
| hardihood(noun, activity, go, drive, power) | |
| immobility(noun, support, control, strength, balance) | |
| immovability(noun, support, control, strength, temper) | |
| intrepidity(noun, power, strength, spirit, dash) | |
| resoluteness(noun, support, control, strength, determination) | |
| rigidity | |
| spirit(noun, go, power, strength, energy) |
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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> |