| unalterable(set, strong, hard, severe, definite) |
| unchanging |
| uncharitable(adjective, terrible behavior) |
| willful(adjective, tough, firm, determined, resolute) |
| barbaric(adjective, terrible behavior) |
| barbarous(adjective, terrible behavior) |
| bold(adjective, resolute) |
| contrary(adjective, difficult, determined, resolute, obstinate) |
| correct(adjective, severe) |
| courageous(adjective, resolute) |
| dead set(adjective, determined, resolute, uncompromising, unshakeable) |
| definite(adjective, strong, flat, firm, certain) |
| dour(adjective, severe) |
| exact(adjective, strong, correct, severe, definite) |
| frigid(adjective, cool, cold, detached, unfriendly) |
| frosty(adjective, cool, severe, cold, detached) |
| heartless(adjective, mean, hard, careless, indifferent) |
| icy(adjective, cool, severe, cold, detached) |
| indefatigable(adjective, resolute) |
| inhumane(adjective, terrible behavior) |