| hardened(adjective, hard, firm, solid, stiff) |
| hoarse(adjective, shrill) |
| howling |
| immalleable(adjective, hard, firm, solid, stiff) |
| impliable(adjective, hard, firm, solid, stiff) |
| incapacitated(adjective, feeble, frail, flimsy, debilitated) |
| incompliant(adjective, hard, firm, solid, tense) |
| indurate(adjective, hard, firm, solid, stiff) |
| inelastic(adjective, hard, firm, solid, stiff) |
| inflexible(adjective, hard, firm, solid, stiff) |
| jangling(adjective, shrill) |
| jarring(adjective, shrill) |
| jelled(adjective, hard, firm, solid, tense) |
| keen |
| mechanical(adjective, hard, firm, solid, tense) |
| numbed(adjective, hard, firm, solid, tense) |
| old(adjective, feeble, gray, venerable, early) |
| old-fashioned |
| ossified(adjective, hard, firm, solid, tense) |
| petrified(adjective, hard, firm, solid, tense) |