| hardened(verb, adjective, hard, tough) |
| coagulated(verb, adjective, solid, heavy) |
| congealed(verb, adjective, hard, tough) |
| jelled(verb, adjective, hard, tough) |
| firm(adjective, hard, solid, heavy) |
| hard(adjective, tough, firm, solid) |
| petrified(verb, adjective, firm, solid) |
| solid(adjective, hard, tough, firm) |
| concrete(adjective, hard, tough, firm) |
| consolidated(verb, adjective, firm, solid) |
| stiff(adjective, hard, tough, firm) |
| thickened(verb, adjective, firm, solid) |
| calcified(adjective, firm, solid, hardened) |
| clotted(verb, adjective, solid, heavy) |
| compact(adjective, hard, tough, firm) |
| condensed(verb, adjective, hard, tough) |
| ossified(adjective, hard, firm, solid) |
| thick(adjective, hard, tough, firm) |
| compressed(verb, adjective, hard, tough) |
| curdled(verb, adjective, solid, heavy) |