- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
144 entries under tough topic. ×
| viscous(adjective, secure, thick, tacky) | |
| adhesive(adjective, secure, thick, tacky) | |
| headstrong(adjective, firm, resist, awkward) | |
| indomitable(adjective, strong, firm, difficult) | |
| sturdy(adjective, strong, sound, fit) | |
| fast(adjective, strong, free, secure) | |
| inexorable(adjective, firm, determined, resolute) | |
| pigheaded(adjective, firm, difficult, resist) | |
| hardheaded(adjective, firm, resist, determined) | |
| single-minded(adjective, intense, deliberate, determined) | |
| stout(adjective, strong, sound, fit) | |
| unshakable(adjective, strong, firm, determined) | |
| vigorous(adjective, strong, sound, fit) | |
| viscid(adjective, secure, tacky, sticky) | |
| bullheaded(adjective, firm, difficult, resist) | |
| constant(adjective, strong, flat, firm) | |
| enduring(adjective, strong, sound, fit) | |
| hearty(adjective, strong, sound, fit) | |
| plucky(adjective, strong, determined, bold) | |
| secure(adjective, strong, sound, free) |
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| APA | Smart Define. (2015). tenacious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, tenacious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>. |
| MLA | Smart Define. "tenacious thesaurus" 6 November 2015. Web. 27 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms> |