| permanence |
| stubbornness(noun, perseverance, obstinacy, inflexibility, rigor) |
| inflexibility(noun, determination, perseverance, obstinacy, stubbornness) |
| obstinacy(noun, perseverance, stubbornness, inflexibility, rigor) |
| rigidity(noun, perseverance, obstinacy, stubbornness, inflexibility) |
| mulishness(determination, perseverance, obstinacy, stubbornness, inflexibility) |
| obduracy(noun, determination, perseverance, obstinacy, stubbornness) |
| obdurateness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| pertinacity(determination, perseverance, obstinacy, stubbornness, inflexibility) |
| pigheadedness(determination, perseverance, obstinacy, stubbornness, inflexibility) |
| relentlessness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| remorselessness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| rigidness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| bullheadedness(noun, determination, perseverance, obstinacy, stubbornness) |
| contumacy(determination, perseverance, obstinacy, stubbornness, inflexibility) |
| determination(noun, obstinacy, stubbornness, inflexibility) |
| die-hardism(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| doggedness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| grimness(perseverance, obstinacy, stubbornness, inflexibility, rigor) |
| implacability(noun, perseverance, obstinacy, stubbornness, inflexibility) |