| bull-headed(adjective, determined, resolute, obstinate, uncompromising) |
| contrary(adjective, determined, resolute, obstinate, uncompromising) |
| die-hard(adjective, resist, determined, resolute, persistent) |
| grim(adjective, resist, determined, resolute, persistent) |
| hanging tough(adjective, determined, resolute, uncompromising, unshakeable) |
| hardheaded(adjective, determined, resolute, obstinate, uncompromising) |
| hidebound(adjective, determined, resolute, obstinate, uncompromising) |
| implacable(adjective, resist, determined, resolute, persistent) |
| iron(adjective, resist, determined, resolute, persistent) |
| mulish(adjective, determined, resolute, obstinate, uncompromising) |
| pat(adjective, determined, resolute, obstinate, uncompromising) |
| pertinacious(adjective, determined, resolute, obstinate, uncompromising) |
| pig-headed(adjective, determined, resolute, obstinate, uncompromising) |
| remorseless(adjective, resist, determined, resolute, persistent) |
| strong |
| tough(adjective, determined, resolute, obstinate, uncompromising) |
| hanging(adjective, determined, resolute, obstinate, uncompromising) |
| hard(adjective, firm, rigid, inflexible, unbending) |
| loyal |
| solid(adjective, firm, rigid, inflexible, unbending) |