| thoughtless(adjective, feature, state, careless, indifferent) |
| unexcited(adjective, calm, quiet, cool, relaxed) |
| unfeeling(adjective, calm, cool, relaxed, indifferent) |
| callous(adjective, cool, indifferent, detached, blank) |
| apathetical(adjective, temper, cold, negative, dead) |
| at ease(expression, adjective, calm, relaxed, tranquil) |
| distant(adjective, indifferent, detached, aloof, apathetic) |
| impersonal(adjective, temper, cold, negative, dead) |
| inscrutable(adjective, cool, blank, aloof, unemotional) |
| irresponsible(adjective, feature, state, trait, casual) |
| laid-back(adjective, feature, state, calm, cool) |
| languid(adjective, feature, state, trait) |
| objective(adjective, indifferent, detached, distant, apathetic) |
| reserved(adjective, cool, indifferent, blank, aloof) |
| sassy |
| stoical(adjective, calm, cool, indifferent, steady) |
| stony(adjective, indifferent, unsympathetic, insensitive, inattentive) |
| suave |
| tepid(adjective, temper, cold, negative, behave) |
| unsympathetic(adjective, indifferent, detached, distant, apathetic) |