Synonyms|142Antonyms|64|Broader|5Narrower|0Related|175
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mulishness(ruthlessness, mercilessness, relentlessness)
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nastiness(noun, cruelty, harshness, unkindness, callousness)
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obstinacy(ruthlessness, mercilessness, relentlessness)
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oppressiveness
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persecution(noun, cruelty, harshness, unkindness, callousness)
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pertinacity(ruthlessness, mercilessness, relentlessness)
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pigheadedness(ruthlessness, mercilessness, relentlessness)
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rancor(noun, cruelty, harshness, unkindness, callousness)
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rancorousness
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remorselessness(coldness, hardheartedness, ruthlessness, mercilessness, relentlessness)
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rigidness(ruthlessness, mercilessness, relentlessness)
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rigorousness
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spite(noun, cruelty, harshness, unkindness, callousness)
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spitefulness(noun, cruelty, harshness, unkindness, callousness)
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stringency
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stubbornness(ruthlessness, mercilessness, relentlessness)
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torture(noun, cruelty, harshness, unkindness, callousness)
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truculence(noun, cruelty, harshness, unkindness, callousness)
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unfeelingness(noun, cruelty, harshness, unkindness, coldness)
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unyieldingness(ruthlessness, mercilessness)
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APASmart Define. (2015). pitilessness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/pitilessness/thesaurus/synonyms
ChicagoSmart Define. 2015. "pitilessness thesaurus" https://smartdefine.org/pitilessness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, pitilessness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/pitilessness/thesaurus/synonyms>.
MLASmart Define. "pitilessness thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/pitilessness/thesaurus/synonyms>