- Definitions|1
- Thesaurus|225
- Abbreviations|0
| impervious(adjective, cold, aloof, no feelings) | |
| indurate(adjective, cold, aloof, no feelings) | |
| insentient(adjective, cold, aloof, no feelings) | |
| irresponsive(adjective, cold, aloof, no feelings) | |
| marble(adjective, cold, aloof, no feelings) | |
| marble-hearted(adjective, cold, aloof, no feelings) | |
| stockish(adjective, cold, aloof, no feelings) | |
| tearless(adjective, cold, aloof, no feelings) | |
| unalive(adjective, cold, aloof, no feelings) | |
| unkindly(adjective, cold, aloof, no feelings) | |
| unresponsive(adjective, cold, aloof, no feelings) |
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| APA | Smart Define. (2013). iron-hearted thesaurus. Retrieved September 29, 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 29, 2026). |
| Harvard | Smart Define 2013, iron-hearted thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/iron-hearted/thesaurus/synonyms>. |
| MLA | Smart Define. "iron-hearted thesaurus" 19 May 2013. Web. 29 September 2026. <https://smartdefine.org/iron-hearted/thesaurus/synonyms> |