| unruly(adjective, persistent, obstinate, insistent, dogged) |
| unyielding(adjective, firmness, persistence, rigidity, obstinacy) |
| wayward(adjective, persistent, obstinate, insistent, dogged) |
| anal-retentive(adjective, persistent, obstinate, insistent, dogged) |
| cantankerous(adjective, persistent, obstinate, insistent, dogged) |
| confirmed(adjective, persistent, obstinate, insistent, dogged) |
| cussed(adjective, persistent, obstinate, insistent, dogged) |
| disobedient(adjective, persistent, obstinate, insistent, dogged) |
| exacting(adjective, persistent, obstinate, insistent, dogged) |
| hard-shell(adjective, persistent, obstinate, insistent, dogged) |
| hard-shelled(adjective, persistent, obstinate, insistent, dogged) |
| hell-bent(adjective, persistent, obstinate, insistent, dogged) |
| insurgent(adjective, persistent, obstinate, insistent, dogged) |
| inveterate(adjective, persistent, obstinate, insistent, dogged) |
| invincible(adjective, persistent, obstinate, insistent, dogged) |
| irremovable(adjective, firmness, hardness, solidity, sturdiness) |
| nonelastic(adjective, firmness, hardness, solidity, sturdiness) |
| obsessive(adjective, persistent, obstinate, insistent, dogged) |
| rock-ribbed(adjective, firmness, hardness, solidity, sturdiness) |
| stouthearted(adjective, persistent, obstinate, insistent, dogged) |