107 entries under tough topic. ×
| callous(noun, adjective, person, hard, cool) | |
| hard(adjective, severe, firm, attitude) | |
| inured(noun, adjective, set, strong, hard) | |
| obdurate(adjective, person, hard, severe) | |
| insensitive(noun, adjective, hard, severe) | |
| set(verb, adjective, hard, firm) | |
| solidified(verb, adjective, set, hard) | |
| stony(adjective, person, hard, severe) | |
| uncompassionate(adjective, person, hard, severe) | |
| cold-blooded(adjective, person, hard, cool) | |
| shameless(adjective, hard, harsh, rude) | |
| stiff(adjective, hard, firm, solid) | |
| heartless(adjective, hard, cool, severe) | |
| inflexible(adjective, person, hard, firm) | |
| rigid(adjective, strong, hard, firm) | |
| firm(adjective, set, strong, hard) | |
| numb(noun, adjective, hard, severe) | |
| cold(adjective, hard, cool, severe) | |
| insensible(adjective, hard, cool, severe) | |
| thick-skinned(noun, adjective, hard, severe) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |