| gummous(adjective, set, solid, heavy, deep) |
| gummy(heavy, dense, syrupy, concentrated, viscous) |
| gunky(adjective, set, solid, heavy, deep) |
| habitual(adjective, even, rigid, inflexible, reliable) |
| hard-nosed(adjective, determined, resolute, uncompromising, unshakeable) |
| harder |
| headstrong(adjective, determined, resolute, uncompromising, unshakeable) |
| heavy(adjective, set, solid, deep, stiff) |
| hornified |
| idle(adjective, dull, sluggish, lazy, passive) |
| immalleable(adjective, hard, firm, solid, stiff) |
| immobile(adjective, dull, idle, sluggish, lazy) |
| immovable(adjective, determined, resolute, uncompromising, unshakeable) |
| impenetrable(adjective, set, solid, heavy, deep) |
| impervious(adjective, set, solid, heavy, deep) |
| implacable(adjective, determined, resolute, uncompromising, unshakeable) |
| impliable(adjective, hard, firm, solid, stiff) |
| in holding pattern(expression, adjective, idiom, dull, idle) |
| incompliant(adjective, hard, firm, solid, tense) |
| incorrigible(adjective, normal, even, rigid, inflexible) |