| closed |
| cold-blooded(adjective, person, hard, careless, indifferent) |
| compressed(adjective, set, strong, hard, tough) |
| condensed(adjective, hard, tough, solid, rigid) |
| correct(adjective, severe) |
| critical(adjective, severe) |
| dead set(adjective, determined, resolute, uncompromising, unshakeable) |
| dense(adjective, close, set, strong, hard) |
| doctrinaire(adjective, opinionated, dogmatic) |
| even(adjective, smooth, right, solid, level) |
| exact(adjective, rigid) |
| hanging(adjective, determined, resolute, obstinate, uncompromising) |
| hard-and-fast(adjective, hard, strict, obstinate, stubborn) |
| illiberal(adjective, moderate, rigid, cautious, timid) |
| impenetrable(adjective, set, strong, hard, tough) |
| impervious(adjective, hard, tough, solid, rigid) |
| impliable(adjective, hard, firm, solid, stiff) |
| incorrigible(adjective, normal, even, rigid, reliable) |
| indifferent(adjective, hard, careless, cruel, apathetic) |
| inevitable(adjective, certain, fixed, expected, predictable) |