| unforgiving(adjective, pitiless, intolerant) |
| Laodicean(adjective, cold, dead, apathy, passive) |
| assured(adjective, calm, cool, steady, unaffected) |
| chilly |
| cold-hearted(adjective, cold, unfeeling, unsympathetic, pitiless) |
| flinty |
| harsh(adjective, mean, hard, cool, unpleasant) |
| heartless(adjective, mean, hard, cool, unpleasant) |
| hushed(adjective, quiet, cool, still, peaceful) |
| immotile(calm, still, lifeless, inactive, inert) |
| inexcitable(adjective, cool, blank, aloof, unemotional) |
| insensate(adjective, cold, indifferent, unyielding, unconscious) |
| iron |
| perfunctory(adjective, cold, indifferent, dead, apathetic) |
| rigorous |
| stagnant(calm, still, lifeless, inactive, inert) |
| stiff |
| sullen |
| supine(adjective, cold, indifferent, dead, unsympathetic) |
| thick-skinned(adjective, calm, cool, restrained, steady) |