| spiritless(adjective, cool, sad, indifferent, depressed) |
| staunch(adjective, firm, cold, indifferent, unyielding) |
| tepid(adjective, calm, temper, cold, indifferent) |
| tough(adjective, calm, mean, hard, cool) |
| unaltered(adjective, calm, wild, restrained, unconcerned) |
| unchanged(adjective, calm, wild, restrained, unconcerned) |
| uncompassionate(adjective, mean, hard, cool, unpleasant) |
| uncompromising |
| unexcitable(adjective, calm, quiet, cool, moderate) |
| uninfluenced(adjective, calm, restrained, unconcerned, subdued) |
| unperturbed(adjective, indifferent, unsympathetic, tranquil, inattentive) |
| unpitying(adjective, mean, hard, cool, unpleasant) |
| unstruck |
| unswayed(adjective, unbiased) |
| unwavering(adjective, firm, stable, unyielding, unbending) |
| merciless(adjective, cold, cruel, unfeeling, unsympathetic) |
| adamantine |
| at a standstill(expression, adjective, idiom, calm, quiet) |
| at anchor(expression, idiom, quiescence) |
| at rest(expression, calm, still, lifeless, inactive) |