| unappeasable(adjective, determined, resolute, uncompromising, unshakeable) |
| wilful(adjective, determined, resolute, uncompromising, unshakeable) |
| bullheaded(adjective, tough, severe, determined, resolute) |
| business-minded |
| hardened(adjective, determined, fixed, resolute, stubborn) |
| irreconcilable(adjective, hostile, conflicting) |
| ossified(adjective, determined, resolute, uncompromising, unshakeable) |
| refractory(adjective, tough, firm, determined, stubborn) |
| rock-ribbed(adjective, determined, resolute, uncompromising, unshakeable) |
| contrary(adjective, determined, resolute, obstinate, stubborn) |
| diehard(noun, adjective, person, conservative, reactionary) |
| hard-core(adjective, dedicated) |
| inconvincible(adjective, determined, resolute, uncompromising, unshakeable) |
| recalcitrant(adjective, tough, firm, obstinate, stubborn) |
| resolved(adjective, deliberate, determined, fixed, resolute) |
| self-opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| tough(adjective, firm, determined, resolute, obstinate) |
| unchangeable(adjective, steady, fixed, impassive, inflexible) |
| unmoved(adjective, determined, fixed, stubborn) |
| bull-headed(adjective, determined, resolute, obstinate, stubborn) |