- Definitions|1
- Thesaurus|235
- Abbreviations|0
| obdu(noun, stubbornness, inflexibility, intransigence, inexorability) | |
| pitilessness(ruthlessness, mercilessness, relentlessness) | |
| pluckiness(noun, spirit, courage, daring, valor) | |
| rigor(obstinacy, stubbornness) | |
| ruthlessness(pitilessness, mercilessness, relentlessness) | |
| spirit(noun, determination, courage, daring, valor) | |
| stamp(noun, spirit, determination, courage, temperament) | |
| staying power | |
| stick-to-it-iveness | |
| strength of character(noun, expression, idiom, resolve, purpose) | |
| strength of mind(noun, expression, idiom, resolve, purpose) | |
| strictness(ruthlessness, pitilessness, mercilessness, relentlessness) | |
| temper(noun, spirit, determination, courage, temperament) | |
| temperament(noun, spirit, determination, courage, stamina) | |
| unavoidability | |
| unyieldingness(obstinacy, stubbornness, inflexibility, ruthlessness, pitilessness) | |
| valour | |
| vigorousness | |
| vigour | |
| vitality(noun, spirit, determination, courage, temperament) |
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| APA | Smart Define. (2015). indomitability thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/indomitability/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indomitability thesaurus" https://smartdefine.org/indomitability/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, indomitability thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/indomitability/thesaurus/synonyms>. |
| MLA | Smart Define. "indomitability thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/indomitability/thesaurus/synonyms> |