- Definitions|1
- Thesaurus|268
- Abbreviations|0
21 entries under ruthlessness topic. ×
| cruelty(noun, harshness, sternness, pitilessness) | |
| stubbornness(noun, state, quality, spirit, resist) | |
| harshness(noun, sternness, pitilessness, mercilessness) | |
| mercilessness(noun, pitilessness) | |
| doggedness(noun, spirit, determination, firmness, decision) | |
| obstinacy(noun, spirit, determination, firmness, decision) | |
| pertinacity(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| pitilessness(noun, mercilessness) | |
| heartlessness(noun, pitilessness, mercilessness) | |
| strictness(noun, harshness, sternness, pitilessness) | |
| unyieldingness(obstinacy, stubbornness, inflexibility, pitilessness) | |
| adamancy(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| bullheadedness(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| cold-bloodedness(noun, pitilessness, mercilessness) | |
| contumacy(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| indomitability(noun, perseverance, obstinacy, stubbornness, rigor) | |
| mulishness(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| pigheadedness(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| callousness(pitilessness, mercilessness) | |
| cold-heartedness(pitilessness, mercilessness) |
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| APA | Smart Define. (2015). relentlessness thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/relentlessness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "relentlessness thesaurus" https://smartdefine.org/relentlessness/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, relentlessness thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/relentlessness/thesaurus/synonyms>. |
| MLA | Smart Define. "relentlessness thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/relentlessness/thesaurus/synonyms> |