- Definitions|1
- Thesaurus|461
- Abbreviations|0
| infamous(adjective, bad behavior) | |
| inflexible(adjective, hard, severe, harsh, careless) | |
| insensible(adjective, mean, hard, harsh, careless) | |
| insentient(adjective, hard, careless, indifferent, cruel) | |
| insusceptible(adjective, hard, insensitive, unsusceptible) | |
| iron-fisted(adjective, mean, severe, harsh, cruel) | |
| irreverent(adjective, hard, unfeeling, unsympathetic, hardened) | |
| lost to shame(expression, idiom) | |
| malign(adjective, coldhearted) | |
| marble | |
| marblelike | |
| mean machine(expression, adjective, mean, severe, harsh) | |
| mortal(adjective, mean, severe, harsh, cruel) | |
| obtuse(adjective, hard, indifferent, unfeeling, unsympathetic) | |
| pachydermatous | |
| prepared(adjective, hard, unfeeling, unsympathetic, hardened) | |
| proof against | |
| remorseless(adjective, mean, hard, harsh, cold) | |
| rocky | |
| savage(adjective, mean, hard, harsh, cold) |
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| APA | Smart Define. (2016). hardhearted thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hardhearted/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hardhearted thesaurus" https://smartdefine.org/hardhearted/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, hardhearted thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hardhearted/thesaurus/synonyms>. |
| MLA | Smart Define. "hardhearted thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/hardhearted/thesaurus/synonyms> |