| implacable(adjective, determined, resolute, uncompromising, unshakeable) |
| inflexible(adjective, determined, resolute, uncompromising, unshakeable) |
| mulish(adjective, determined, resolute, uncompromising, unshakeable) |
| obdurate(adjective, determined, resolute, uncompromising, unshakeable) |
| obstinate(adjective, determined, resolute, uncompromising, unshakeable) |
| opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| ossified(adjective, determined, resolute, uncompromising, unshakeable) |
| pat(adjective, determined, resolute, uncompromising, unshakeable) |
| pertinacious(adjective, determined, resolute, uncompromising, unshakeable) |
| perverse(adjective, determined, resolute, uncompromising, unshakeable) |
| pigheaded(adjective, determined, resolute, uncompromising, unshakeable) |
| sceptical |
| self-opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| self-willed(adjective, determined, resolute, uncompromising, unshakeable) |
| shy of belief(expression, idiom, incredulity) |
| stiff-necked(adjective, determined, resolute, uncompromising, unshakeable) |
| unbending(adjective, determined, resolute, uncompromising, unshakeable) |
| uncompromising(adjective, determined, resolute, unshakeable) |
| unyielding(adjective, determined, resolute, uncompromising, unshakeable) |
| willful(adjective, determined, resolute, uncompromising, unshakeable) |