| intransigent(obstinate, stubborn, unbending) |
| iron(obstinate, stubborn, unbending) |
| jelled(adjective, inflexible, unbending) |
| located(adjective, inflexible, unbending) |
| obdurate(obstinate, stubborn, unbending) |
| obstinate(stubborn, unbending) |
| pigheaded(obstinate, stubborn, unbending) |
| placed(adjective, inflexible, unbending) |
| positioned(adjective, inflexible, unbending) |
| recalcitrant(obstinate, stubborn, unbending) |
| relentless(obstinate, stubborn, unbending) |
| resolute(obstinate, stubborn, unbending) |
| rigid(obstinate, stubborn, unbending) |
| rigorous(obstinate, stubborn, unbending) |
| set(adjective, inflexible, strict, obstinate, stubborn) |
| single-minded(obstinate, stubborn, unbending) |
| sited(adjective, inflexible, unbending) |
| situate(adjective, inflexible, unbending) |
| situated(adjective, inflexible, unbending) |
| solid(adjective, inflexible, unbending) |