107 entries under tough topic. ×
| intolerant(adjective, hard, harsh, cruel) | |
| iron-hearted(adjective, hard, severe, cruel) | |
| pitiless(adjective, hard, severe, harsh) | |
| refractory(adjective, hard, firm, solid) | |
| rigorous(adjective, hard, harsh, cruel) | |
| savage(adjective, hard, harsh, cold) | |
| sensationless(adjective, hard, severe, cruel) | |
| senseless(adjective, hard, severe, cruel) | |
| sour(adjective, hard, harsh, cruel) | |
| strong(adjective, set, hard, sound) | |
| sturdy(strong, hard, fit, solid) | |
| surly(adjective, hard, severe, cruel) | |
| thick(adjective, hard, firm, solid) | |
| unamiable(adjective, hard, severe, cruel) | |
| uncordial(adjective, hard, severe, cruel) | |
| unkind(adjective, hard, severe, indifferent) | |
| unregenerate(adjective, hard, harsh, wicked) | |
| unremitting(adjective, hard, harsh, cruel) | |
| vindictive(adjective, hard, harsh, cruel) | |
| close-grained(hard, solid, rigid, inflexible) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |