| refractory(adjective, obstinate, stubborn, willful) |
| relentless(adjective, determined, resolute, obstinate, uncompromising) |
| resistant(adjective, determined, resolute, obstinate, uncompromising) |
| set(adjective, determined, resolute, obstinate, uncompromising) |
| set in stone(adjective, determined, resolute, obstinate, uncompromising) |
| standing pat(adjective, determined, resolute, obstinate, uncompromising) |
| steadfast(adjective, determined, resolute, obstinate, uncompromising) |
| stiff(adjective, determined, resolute, obstinate, uncompromising) |
| tough nut(expression, obstinate, stubborn, willful, intransigent) |
| unshakable(adjective, determined, resolute, obstinate, uncompromising) |
| unswayable(adjective, determined, resolute, obstinate, uncompromising) |
| unwavering(adjective, determined, resolute, obstinate, uncompromising) |
| wayward(adjective, obstinate, stubborn, willful) |
| awkward(obstinate, stubborn, willful) |
| cantankerous(obstinate, stubborn, willful) |
| cocksure |
| dictatorial |
| difficult(obstinate, stubborn, willful) |
| doctrinaire |
| dogmatic |