- Definitions|1
- Thesaurus|225
- Abbreviations|0
46 entries under severe topic. ×
| tough(adjective, hard, cruel, unsympathetic) | |
| unamiable(adjective, hard, tough, cold) | |
| uncompassionate(adjective, hard, tough, cold) | |
| uncordial(adjective, hard, tough, cold) | |
| unemotional(adjective, hard, tough, cold) | |
| coldhearted(adjective, unfeeling, numb, hard-hearted) |
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| APA | Smart Define. (2013). iron-hearted thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/iron-hearted/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "iron-hearted thesaurus" https://smartdefine.org/iron-hearted/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2013, iron-hearted thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/iron-hearted/thesaurus/synonyms>. |
| MLA | Smart Define. "iron-hearted thesaurus" 19 May 2013. Web. 30 September 2026. <https://smartdefine.org/iron-hearted/thesaurus/synonyms> |