- Definitions|1
- Thesaurus|113
- Abbreviations|0
| acrimony | |
| animosity | |
| asperity | |
| austerity | |
| bitterness | |
| callousness(ruthlessness, pitilessness, mercilessness) | |
| cold-bloodedness(ruthlessness, pitilessness, mercilessness, relentlessness) | |
| cold-heartedness(ruthlessness, pitilessness, mercilessness) | |
| despitefulness(noun, malice, meanness, nastiness, vindictiveness) | |
| dogmatism(obstinacy, stubbornness, rigor) | |
| enmity(noun, malice, meanness, nastiness, vindictiveness) | |
| evil(noun, malice, meanness, nastiness, vindictiveness) | |
| gall | |
| gravity | |
| grudge(noun, cruelty, malice, meanness, nastiness) | |
| hardheartedness(ruthlessness, pitilessness, mercilessness) | |
| hate(noun, malice, meanness, nastiness, vindictiveness) | |
| hatred(noun, malice, meanness, nastiness, vindictiveness) | |
| heartlessness(ruthlessness, pitilessness, mercilessness, relentlessness) | |
| ill feeling(noun, expression, malice, meanness, nastiness) |
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| APA | Smart Define. (2015). implacableness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/implacableness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "implacableness thesaurus" https://smartdefine.org/implacableness/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, implacableness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/implacableness/thesaurus/synonyms>. |
| MLA | Smart Define. "implacableness thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/implacableness/thesaurus/synonyms> |