| uniform(adjective, even, consistent, unchanging, unbroken) |
| unyielding(adjective, hard, firm, determined, resolute) |
| vitrified(adjective, set, solid, heavy, deep) |
| calcified |
| firm(adjective, set, hard, solid, heavy) |
| hardheaded(adjective, determined, resolute, uncompromising, unshakeable) |
| inconvincible(adjective, determined, resolute, uncompromising, unshakeable) |
| indurate(adjective, hard, firm, solid, tense) |
| indurated |
| jelled(set, firm, solid, heavy, deep) |
| methodical(adjective, even, rigid, inflexible, reliable) |
| mulish(adjective, determined, resolute, uncompromising, unshakeable) |
| obdurate(adjective, determined, resolute, uncompromising, unshakeable) |
| obstinate(adjective, determined, resolute, uncompromising, unshakeable) |
| opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| osseous(scrawny, skinny, skeletal) |
| pat(adjective, determined, resolute, uncompromising, unshakeable) |
| rigidified |
| self-opinionated(adjective, determined, resolute, uncompromising, unshakeable) |
| solid(adjective, set, hard, firm, heavy) |