| contumacy(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| doggedness(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| indomitability(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| mulishness(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| obstinacy(noun, perseverance, stubbornness, inflexibility, rigor) |
| pertinacity(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| pigheadedness(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| callousness(ruthlessness, pitilessness, mercilessness) |
| cold-bloodedness(ruthlessness, pitilessness, mercilessness, relentlessness) |
| cold-heartedness(ruthlessness, pitilessness, mercilessness) |
| dogmatism(obstinacy, stubbornness, rigor) |
| hardheartedness(ruthlessness, pitilessness, mercilessness) |
| harshness(ruthlessness, pitilessness, mercilessness, relentlessness) |
| heartlessness(ruthlessness, pitilessness, mercilessness, relentlessness) |
| mercilessness(ruthlessness, pitilessness, relentlessness) |
| obdu(stubbornness, inflexibility, intransigence, inexorability) |
| pitilessness(ruthlessness, mercilessness, relentlessness) |
| resist |
| rigor(obstinacy, stubbornness) |
| ruthlessness(pitilessness, mercilessness, relentlessness) |