- Definitions|2
- Thesaurus|899
- Abbreviations|0
285 entries under adjective topic. ×
| reliable | |
| rigorous(set, strong, hard, tough) | |
| robust(strong, hard, great, tough) | |
| rough(strong, hard, great, tough) | |
| rugged(strong, hard, tough, determined) | |
| safe | |
| secure | |
| spirited(strong, tough, determined, bold) | |
| stony | |
| stout-hearted | |
| surviving | |
| unalarmed(bold, unconcerned, brave, steadfast) | |
| unapprehensive(bold, unconcerned, brave, steadfast) | |
| unbearable | |
| unceasing(strong, firm, determined, steady) | |
| undeterred(strong, firm, determined, steady) | |
| undismayed(strong, vigorous, noble, bold) | |
| unregenerate(persistent, obstinate, insistent, dogged) | |
| unshrinking(resolution, bold, unconcerned, brave) | |
| unstinted(strong, firm, determined, steady) |
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| APA | Smart Define. (2015). indomitable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/indomitable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indomitable thesaurus" https://smartdefine.org/indomitable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, indomitable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/indomitable/thesaurus/synonyms>. |
| MLA | Smart Define. "indomitable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/indomitable/thesaurus/synonyms> |