| patient(adjective, quiet, flat, indifferent, apathetic) |
| phlegmatic(adjective, quiet, indifferent, apathetic, lifeless) |
| placatory(calm, quiet, friendly, serene) |
| poker-faced(adjective, quiet, flat, indifferent, apathetic) |
| prudent |
| quiescent(adjective, quiet, flat, indifferent, apathetic) |
| receptive(adjective, quiet, flat, indifferent, apathetic) |
| resigned(adjective, quiet, flat, indifferent, apathetic) |
| restful(calm, quiet, friendly, easygoing, compliant) |
| sleepy(adjective, quiet, flat, indifferent, apathetic) |
| smooth(adjective, calm, quiet, friendly, agreeable) |
| sober |
| sociable(calm, quiet, serene) |
| soft |
| static(adjective, quiet, flat, indifferent, apathetic) |
| steady(calm, quiet, friendly, serene) |
| stolid(adjective, quiet, indifferent, apathetic, lifeless) |
| submissive(adjective, calm, quiet, flat, indifferent) |
| temperate |
| tractable(adjective, quiet, flat, indifferent, apathetic) |