- Definitions|2
- Thesaurus|899
- Abbreviations|0
83 entries under determined topic. ×
| courageous(adjective, strong, vigorous, noble) | |
| brave(adjective, strong, tough, vigorous) | |
| resolute(adjective, strong, tough, firm) | |
| dogged(adjective, strong, firm, steady) | |
| unyielding(adjective, set, strong, hard, tough) | |
| dauntless(adjective, strong, tough, vigorous) | |
| fearless(adjective, strong, tough, vigorous) | |
| stubborn(adjective, strong, hard, tough, difficult) | |
| firm(noun, adjective, strong, hard, tough) | |
| staunch(adjective, strong, firm, steady) | |
| obstinate(adjective, violent, resolution, resolute) | |
| steadfast(adjective, strong, vigorous, noble) | |
| strong(adjective, hard, great, tough, firm) | |
| tenacious(adjective, strong, tough, firm, difficult) | |
| resolved(adjective, resolution, courage, resolute) | |
| unflinching(adjective, strong, firm, steady) | |
| indefatigable(adjective, strong, firm, steady) | |
| persistent(adjective, strong, firm, steady) | |
| unwavering(adjective, strong, firm, steady) | |
| relentless(adjective, strong, hard, tough) |
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| APA | Smart Define. (2015). indomitable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/indomitable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indomitable thesaurus" https://smartdefine.org/indomitable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, indomitable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/indomitable/thesaurus/synonyms>. |
| MLA | Smart Define. "indomitable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/indomitable/thesaurus/synonyms> |