| dense(adjective, solid, heavy, deep) |
| dried(adjective, firm, solid, hardened) |
| firm(verb, adjective, close, fix) |
| fixed(verb, adjective, solid, heavy) |
| gelatinous(adjective, solid, heavy, deep) |
| gloppy(adjective, solid, heavy, deep) |
| gummous(adjective, solid, heavy, deep) |
| hardened(verb, adjective, firm, solid) |
| heavy(adjective, solid, deep, stiff) |
| impenetrable(adjective, solid, heavy, deep) |
| impervious(adjective, solid, heavy, deep) |
| indurate(verb, adjective, firm, solid) |
| jelled(adjective, solid, heavy, deep) |
| monolithic(adjective, firm, solid, hardened) |
| opaque(adjective, dull, flat, solid) |
| ossified(adjective, solid, heavy, deep) |
| petrified(adjective, firm, solid, hardened) |
| poured(adjective, firm, solid, hardened) |
| precast(adjective, firm, solid, stiff) |
| set in stone(expression, adjective, idiom, firm) |