| inflexibility(noun, state, quality, resolve, resist) |
| obstinacy(noun, resolve, determination, resolution, firmness) |
| stubbornness(noun, state, quality, resolve, resist) |
| intransigence(noun, state, quality, resolve, resist) |
| perseverance(noun, resolve, determination, firmness, persistence) |
| pertinacity(noun, resolve, determination, firmness, perseverance) |
| tenacity(noun, resolve, firmness, severity, harshness) |
| doggedness(noun, resolve, determination, firmness, perseverance) |
| hardness(noun, severity, harshness, conformity, strictness) |
| persistence(noun, resolve, determination, firmness, obstinacy) |
| rigidity(noun, state, quality, resist, severity) |
| unyieldingness(noun, obstinacy, stubbornness, inflexibility, ruthlessness) |
| adamance |
| determination(noun, resolve, resolution, firmness, severity) |
| induration(noun, impenitence) |
| inexorability(noun, state, quality, resist, perseverance) |
| relentlessness(noun, state, quality, resist, perseverance) |
| stiffness(noun, severity, harshness, conformity, strictness) |
| callousness(noun, ruthlessness, pitilessness, mercilessness) |
| implacability(noun, state, quality, resist, perseverance) |