| stiff-necked(adjective, determined, resolute, uncompromising, unshakeable) |
| thick(adjective, hard, firm, solid, stiff) |
| thickened(verb, set, firm, solid, heavy) |
| willful(adjective, determined, resolute, uncompromising, unshakeable) |
| abeyant(adjective, dull, idle, sluggish, lazy) |
| annealed(verb, adjective, hard, firm, solid) |
| arthritic(adjective, hard, firm, solid, tense) |
| asleep(adjective, dull, idle, sluggish, lazy) |
| backed |
| benumbed(verb, adjective, hard, firm, solid) |
| blah(dull, idle, sluggish, lazy, motionless) |
| bone |
| brittle(adjective, hard, firm, solid, tense) |
| buckram(adjective, hard, firm, solid, tense) |
| bullheaded(adjective, determined, resolute, uncompromising, unshakeable) |
| caked(adjective, set, solid, heavy, deep) |
| callous |
| calloused |
| case-hardened |
| cemented(verb, adjective, hard, firm, solid) |