| caked(adjective, firm, solid, hardened) |
| calcified(adjective, firm, solid, hardened) |
| cemented(adjective, firm, solid, hardened) |
| compact(adjective, firm, solid, hardened) |
| compressed(adjective, firm, solid, hardened) |
| concrete(adjective, firm, hardened) |
| congealed(verb, adjective, firm, solid) |
| conglomerated(adjective, firm, solid, hardened) |
| consolidated(verb, adjective, firm, solid) |
| hardened(verb, adjective, firm, solid) |
| indurate(adjective, firm, solid, hardened) |
| monolithic(adjective, firm, solid, hardened) |
| petrified(verb, adjective, firm, solid) |
| poured(adjective, firm, solid, hardened) |
| precast(adjective, firm, solid, hardened) |
| set in stone(expression, adjective, idiom, firm) |
| solidified(verb, adjective, firm, solid) |
| steeled(verb, adjective, firm, solid) |
| strong(adjective, firm, solid, hardened) |
| firm(adjective, solid, hardened) |