107 entries under tough topic. ×
| unemotional(adjective, hard, cool, severe) | |
| unsympathetic(adjective, hard, severe, careless) | |
| apathetic(adjective, person, hard, cool) | |
| impenitent(adjective, hard, harsh, careless) | |
| impervious(noun, adjective, set, hard) | |
| seasoned(adjective, set, strong, hard) | |
| unrelenting(adjective, hard, harsh, determined) | |
| unyielding(adjective, set, hard, firm) | |
| congealed(verb, adjective, set, hard) | |
| uncontrite(adjective, hard, harsh, cruel) | |
| unforgiving(adjective, person, hard, harsh) | |
| jelled(verb, adjective, hard, firm) | |
| ruthless(adjective, hard, severe, harsh) | |
| cold-hearted(adjective, hard, severe, attitude) | |
| inexorable(adjective, hard, harsh, determined) | |
| merciless(adjective, person, hard, severe) | |
| relentless(adjective, hard, harsh, cold) | |
| solid(adjective, set, strong, hard) | |
| anesthetized(adjective, hard, severe, cruel) | |
| compressed(verb, adjective, set, strong, hard) |
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| APA | Smart Define. (2016). hardened thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, hardened thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>. |
| MLA | Smart Define. "hardened thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms> |