143 entries under firm topic. ×
| durable(adjective, calm, strong, secure) | |
| enduring(adjective, calm, strong, secure) | |
| entrenched(adjective, determined, usual, regular) | |
| equable(adjective, calm, strong, secure) | |
| even(adjective, calm, strong, secure) | |
| fast(adjective, calm, strong, secure) | |
| formal(adjective, tough, fixed, distant) | |
| hard as nails(expression, adjective, idiom, tough) | |
| hardboiled(adjective, determined, stiff, unfeeling) | |
| hold the fort(expression, adjective, idiom, tough) | |
| hold the line(expression, adjective, idiom, tough) | |
| incompliant(adjective, tough, severe, difficult) | |
| indurate(adjective, set, mean, hard) | |
| intent(adjective, determined, usual, regular) | |
| intractable(adjective, tough, fixed, distant) | |
| inveterate(adjective, determined, usual, regular) | |
| ironclad(adjective, cruel, determined, usual) | |
| monolithic(adjective, set, solid, hardened) | |
| never-failing(adjective, solid, steady, substantial) | |
| petrified(adjective, set, solid, hardened) |
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| APA | Smart Define. (2015). set in stone thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/set_in_stone/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "set in stone thesaurus" https://smartdefine.org/set_in_stone/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, set in stone thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/set_in_stone/thesaurus/synonyms>. |
| MLA | Smart Define. "set in stone thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/set_in_stone/thesaurus/synonyms> |