| callous(adjective, indifferent, unconcerned, uncaring, insensitive) |
| ductile(adjective, shy, meek, docile, obedient) |
| foul(quiet, still, stationary) |
| imperturbable(adjective, tolerant, enduring, patient) |
| laid-back(adjective, quiet, informal, careless, indifferent) |
| leaden(still, sluggish, lifeless, lazy, listless) |
| mild(adjective, quiet, gentle, modest, humble) |
| objective(adjective, insensitive) |
| pliant(adjective, calm, quiet, gentle, meek) |
| receiving |
| servile(adjective, meek, compliant, submissive, docile) |
| sheepish |
| stoic(adjective, calm, dull, indifferent, unconcerned) |
| subservient(adjective, calm, quiet, mean, gentle) |
| timid(adjective, quiet, gentle, modest, humble) |
| unaffected |
| uncompassionate(adjective, calm, dull, flat, unemotional) |
| uncomplaining(adjective, meek, compliant, obedient, deferential) |
| unfeeling(adjective, calm, dull, cool, flat) |
| unmoving(adjective, quiet, still, lifeless, inactive) |