| stiffened |
| stony(adjective, hard, firm, solid, stiff) |
| strong(adjective, set, firm, solid, hardened) |
| syrupy(adjective, set, solid, heavy, deep) |
| taut(adjective, hard, firm, solid, stiff) |
| tense(adjective, hard, firm, solid, stiff) |
| tight(adjective, hard, firm, solid, stiff) |
| turbid(adjective, set, solid, heavy, deep) |
| unbending(adjective, hard, firm, solid, stiff) |
| unflexible(adjective, hard, firm, solid, tense) |
| ungraceful(adjective, hard, firm, solid, tense) |
| unsupple(adjective, hard, firm, solid, tense) |
| viscid(heavy, dense, syrupy, concentrated, viscous) |
| vitrified(adjective, set, solid, heavy, deep) |
| wooden(adjective, hard, firm, solid, tense) |
| acerbated |
| acidulated |
| close-grained(hard, tough, solid, rigid, inflexible) |
| closed off(verb, expression, phrasal verb) |
| coiffed |