423 entries under adjective topic. ×
| adamant(person, feelings, determined, resolute) | |
| firm(set, strong, hard, tough) | |
| numb(noun, hard, tough, severe) | |
| stubborn(characteristic, quality, hard, careless) | |
| case-hardened(hard, careless, indifferent, cruel) | |
| cold(hard, cool, tough, severe) | |
| hardhearted(hard, attitude, careless, cold) | |
| indifferent(hard, cool, careless, cruel) | |
| insensible(hard, cool, tough, severe) | |
| inveterate(set, familiar, usual, fixed) | |
| strengthened(verb, set, strengthened) | |
| thick-skinned(noun, hard, tough, severe) | |
| trained(verb, skilled, experienced, seasoned) | |
| treated | |
| unemotional(hard, cool, tough, severe) | |
| unsympathetic(hard, tough, severe, careless) | |
| adamantine(strong, firm, determined, stiff) | |
| annealed(verb, hard, firm, solid) | |
| apathetic(person, hard, cool, tough) | |
| enured |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |