- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
144 entries under tough topic. ×
| persistent(adjective, strong, flat, firm) | |
| firm(noun, adjective, clear, strong, sound) | |
| determined(adjective, clear, strong, severe) | |
| resolute(adjective, clear, strong, severe) | |
| dogged(adjective, strong, firm, resist) | |
| pertinacious(adjective, strong, firm, difficult) | |
| unyielding(adjective, clear, strong, sound) | |
| steadfast(adjective, clear, strong, secure) | |
| persevering(adjective, strong, flat, firm) | |
| staunch(adjective, clear, strong, sound) | |
| relentless(adjective, strong, firm, determined) | |
| mulish(adjective, strong, firm, resist) | |
| uncompromising(adjective, firm, determined, resolute) | |
| indefatigable(adjective, strong, fit, firm) | |
| fixed(adjective, strong, sound, secure) | |
| strong(adjective, sound, secure, fit) | |
| glutinous(adjective, secure, thick, tacky) | |
| refractory(adjective, firm, difficult, wild) | |
| stalwart(adjective, strong, sound, fit) | |
| unflagging(adjective, strong, fit, firm) |
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| APA | Smart Define. (2015). tenacious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, tenacious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>. |
| MLA | Smart Define. "tenacious thesaurus" 6 November 2015. Web. 25 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms> |