- Definitions|1
- Thesaurus|117
- Abbreviations|0
| mercilessness(noun, pitilessness) | |
| cruelty(noun, pitilessness) | |
| pitilessness(noun, pitilessness) | |
| ruthlessness(noun, pitilessness) | |
| inhumanity(noun, pitilessness) | |
| brutality(noun, pitilessness) | |
| barbarism(noun, pitilessness) | |
| bloodthirstiness(noun, pitilessness) | |
| callousness | |
| coldness | |
| fiendishness(noun, pitilessness) | |
| hardheartedness(noun, pitilessness) | |
| hardness | |
| harshness | |
| hellishness(noun, pitilessness) | |
| inclemency | |
| insensitivity | |
| relentlessness | |
| short shrift | |
| stoniness(noun, pitilessness) |
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| APA | Smart Define. (2015). unmercifulness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unmercifulness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unmercifulness thesaurus" https://smartdefine.org/unmercifulness/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, unmercifulness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unmercifulness/thesaurus/synonyms>. |
| MLA | Smart Define. "unmercifulness thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/unmercifulness/thesaurus/synonyms> |