| hardheaded(adjective, tough, firm, resist, determined) |
| opinionated(adjective, tough, firm, violent, wild) |
| not good |
| obdurate(adjective, tough, firm, determined, resolute) |
| planned(adjective, deliberate, determined, careful, thoughtful) |
| purposeful(adjective, deliberate, determined, careful, thoughtful) |
| refractory(adjective, tough, firm, fast, awkward) |
| stiff-necked(adjective, tough, firm, resist, determined) |
| calculated(adjective, deliberate, careful, thoughtful, cautious) |
| considered(adjective, deliberate, careful, thoughtful, cautious) |
| contumacious(adjective, tough, firm, deliberate, determined) |
| intransigent(adjective, determined, resolute, obstinate, stubborn) |
| premeditated(adjective, deliberate, determined, careful, thoughtful) |
| unforced(adjective, free, keen, happy, agreeable) |
| unyielding(adjective, strong, tough, firm, violent) |
| witting(adjective, free, keen, happy, agreeable) |
| adamant(adjective, tough, determined, resolute, obstinate) |
| business-minded |
| designed(adjective, deliberate, determined, careful, thoughtful) |
| determined(adjective, strong, tough, firm, deliberate) |