83 entries under firm topic. ×
| callous(noun, adjective, person, hard, cool) | |
| hard(adjective, tough, severe, attitude) | |
| inured(noun, adjective, set, strong, hard) | |
| tough(noun, adjective, strong, hard, severe) | |
| set(verb, adjective, hard, tough) | |
| solidified(verb, adjective, set, hard, tough) | |
| stony(adjective, person, hard, tough, severe) | |
| stiff(adjective, hard, tough, solid) | |
| inflexible(adjective, person, hard, tough) | |
| rigid(adjective, strong, hard, tough) | |
| adamantine(adjective, strong, determined, stiff) | |
| annealed(verb, adjective, hard, solid) | |
| impervious(noun, adjective, set, hard, tough) | |
| indurated(verb, adjective, hard, cool) | |
| seasoned(adjective, set, strong, hard, tough) | |
| unyielding(adjective, set, hard, tough) | |
| congealed(verb, adjective, set, hard, tough) | |
| ossified(adjective, solid, determined, resolute) | |
| steeled(noun, verb, adjective, set, strong) | |
| thickened(verb, adjective, hard, solid) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |