| cemented(adjective, set, hard, firm, solid) |
| chilled(adjective, hard, firm, solid, tense) |
| clabber(verb, set, freeze, jellied, calcify) |
| climatize(verb, dull, develop, rough, adjust) |
| clot(verb, close, set, fix, settle) |
| cold-blooded(adjective, bad, cold, aloof, no feelings) |
| cold fish(expression, adjective, mean, hard, stubborn) |
| compressed(adjective, set, strong, hard, firm) |
| conform(verb, dull, develop, rough, adjust) |
| congealed(adjective, set, hard, firm, solid) |
| conglomerated(adjective, set, firm, solid, stiff) |
| consolidated(adjective, set, strong, hard, firm) |
| contracted(adjective, hard, firm, solid, tense) |
| cornify |
| creaky(adjective, hard, firm, solid, stiff) |
| crusted |
| crusty |
| crystallize(verb, close, set, fix, settle) |
| crystallized |
| curdle(verb, close, set, fix, settle) |