- Definitions|2
- Thesaurus|899
- Abbreviations|0
57 entries under rugged topic. ×
| unyielding(adjective, set, strong, hard, tough) | |
| stubborn(adjective, strong, hard, tough, difficult) | |
| firm(noun, adjective, strong, hard, tough) | |
| strong(adjective, hard, great, tough, firm) | |
| relentless(adjective, strong, hard, tough, determined) | |
| inflexible(adjective, set, strong, hard, tough) | |
| sturdy(adjective, strong, hard, great, tough) | |
| hard(adjective, set, strong, great, tough) | |
| inexorable(adjective, strong, hard, tough, resolution) | |
| tough(adjective, strong, hard, great, difficult) | |
| rigid(adjective, strong, hard, tough, persistent) | |
| bullheaded(adjective, strong, hard, tough, difficult) | |
| hard-line(adjective, strong, hard, tough, difficult) | |
| obdurate(adjective, strong, hard, tough, difficult) | |
| strict(adjective, strong, hard, tough, resolute) | |
| adamant(adjective, strong, hard, tough, determined) | |
| hard-shell(adjective, strong, hard, tough, persistent) | |
| immovable(adjective, strong, hard, tough, difficult) | |
| implacable(adjective, set, strong, hard, tough) | |
| serious(adjective, strong, hard, tough, resolute) |
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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> |