- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
134 entries under firm topic. ×
| fixed(adjective, strong, sound, secure, tough) | |
| resolved(adjective, strong, flat, determined) | |
| strong(adjective, sound, secure, tough, fit) | |
| intransigent(adjective, strong, determined, unreasonable) | |
| tireless(adjective, strong, determined, steady) | |
| refractory(adjective, tough, difficult, wild) | |
| stalwart(adjective, strong, sound, tough, fit) | |
| strong-willed(adjective, strong, intense, deliberate) | |
| unflagging(adjective, strong, tough, fit) | |
| clinging(adjective, strong, free, resolute) | |
| headstrong(adjective, tough, resist, awkward) | |
| immovable(adjective, strong, secure, solid) | |
| indomitable(adjective, strong, tough, difficult) | |
| purposeful(adjective, strong, determined, serious) | |
| sturdy(adjective, strong, sound, tough, fit) | |
| unflinching(adjective, strong, flat, determined) | |
| fast(adjective, strong, free, secure, tough) | |
| inexorable(adjective, tough, determined, resolute) | |
| pigheaded(adjective, tough, difficult, resist) | |
| unswerving(adjective, strong, determined, steady) |
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| APA | Smart Define. (2015). tenacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, tenacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>. |
| MLA | Smart Define. "tenacious thesaurus" 6 November 2015. Web. 24 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms> |