79 entries under firm topic. ×
| stiff(adjective, strong, hard, strain) | |
| hard(adjective, strong, strain, firmness) | |
| unyielding(adjective, strong, strain, firmness) | |
| refractory(adjective, strain, solid, firmness) | |
| rigid(adjective, strong, strain, stiff) | |
| tight(adjective, strong, strain, solid) | |
| tough(adjective, strong, hard, fit) | |
| immovable(adjective, determined, resolute, obstinate) | |
| inflexible(adjective, hard, determined, resolute) | |
| resolute(adjective, determined, true, obstinate) | |
| solid(adjective, strong, hard, tough, fit) | |
| unbendable(adjective, determined, resolute, rigid) | |
| fixed(adjective, strong, tough, determined) | |
| set(adjective, hard, solid, determined) | |
| unbending(adjective, hard, determined, resolute) | |
| unwavering(adjective, determined, resolute, obstinate) | |
| inelastic(adjective, hard, solid, determined) | |
| benumbed(adjective, hard, solid, unfeeling) | |
| hardened(adjective, strong, hard, tough, fit) | |
| petrified(adjective, hard, solid, tense) |
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| APA | Smart Define. (2015). resistant thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/resistant/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "resistant thesaurus" https://smartdefine.org/resistant/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, resistant thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/resistant/thesaurus/synonyms>. |
| MLA | Smart Define. "resistant thesaurus" 19 August 2015. Web. 22 September 2026. <https://smartdefine.org/resistant/thesaurus/synonyms> |