- Definitions|2
- Thesaurus|188
- Abbreviations|0
| purposefulness(noun, determination, resolution, endurance, persistence) | |
| relentlessness | |
| spunk(noun, determination, resolution, endurance, persistence) | |
| abidingness(noun, perseverance) | |
| application | |
| ardor | |
| ardour | |
| bullheadedness(noun, resolution) | |
| concentration | |
| continuance(noun, determination, resolution, endurance, persistence) | |
| cool(noun, temper, determination, resolution, composure) | |
| courageousness(noun, resolution) | |
| decision | |
| dedication(noun, resolve, determination, resolution, perseverance) | |
| drive(noun, resolve, determination, resolution, perseverance) | |
| faithfulness(noun, resolution) | |
| fervency(noun, resolution) | |
| fervor | |
| fervour | |
| fidelity |
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Indefatigability on
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| APA | Smart Define. (2015). indefatigability thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/indefatigability/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indefatigability thesaurus" https://smartdefine.org/indefatigability/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, indefatigability thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/indefatigability/thesaurus/synonyms>. |
| MLA | Smart Define. "indefatigability thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/indefatigability/thesaurus/synonyms> |