65 entries under hardened topic. ×
| stiff(adjective, strong, hard, strain, firm) | |
| hard(adjective, strong, strain, firm, firmness) | |
| stubborn(adjective, characteristic, quality, hard, determined) | |
| tough(adjective, strong, hard, fit, firm) | |
| obdurate(adjective, hard, determined, resolute, unfeeling) | |
| inflexible(adjective, hard, firm, determined, resolute) | |
| hard-nosed(adjective, hard, determined, resolute, unfeeling) | |
| unbending(adjective, hard, firm, determined, resolute) | |
| impenetrable(adjective, hard, unfeeling, unsympathetic, prepared) | |
| unsubmissive(adjective, hard, unfeeling, unsympathetic, prepared) | |
| unaffected(adjective, hard, unfeeling, unsympathetic, safe) | |
| unsusceptible(adjective, hard, resist, unfeeling, unsympathetic) | |
| benumbed(adjective, hard, firm, solid, unfeeling) | |
| hardhearted(adjective, hard, unfeeling, unsympathetic) | |
| stony(adjective, hard, firm, solid, stiff) | |
| toughened(adjective, strong, hard, unfeeling, unsympathetic) | |
| accustomed(adjective, hard, unfeeling, unsympathetic, prepared) | |
| callous(adjective, hard, unfeeling, unsympathetic, prepared) | |
| case-hardened(adjective, hard, unfeeling, unsympathetic, prepared) | |
| coldhearted(adjective, hard, unfeeling, unsympathetic, prepared) |
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| APA | Smart Define. (2015). resistant thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/resistant/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "resistant thesaurus" https://smartdefine.org/resistant/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, resistant thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/resistant/thesaurus/synonyms>. |
| MLA | Smart Define. "resistant thesaurus" 19 August 2015. Web. 23 September 2026. <https://smartdefine.org/resistant/thesaurus/synonyms> |