- Definitions|2
- Thesaurus|188
- Abbreviations|0
| good spirits(noun, expression, temper, composure, reasonableness) | |
| immutability | |
| immutableness | |
| importunity(resolve, perseverance, tenacity) | |
| industriousness | |
| inexcitability(noun, temper, composure, reasonableness, equanimity) | |
| inflexibleness | |
| irreversibility | |
| levelheadedness(noun, temper, composure, reasonableness, equanimity) | |
| longanimity(noun, temper, composure, reasonableness, equanimity) | |
| mettle | |
| might | |
| nonresistance(noun, temper, composure, reasonableness, equanimity) | |
| obduracy | |
| obdurateness | |
| obstinateness | |
| passivity(noun, temper, composure, reasonableness, equanimity) | |
| persistency | |
| poise(noun, temper, composure, reasonableness, equanimity) | |
| presence(noun, temper, composure, reasonableness, equanimity) |
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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> |