| reposeful(adjective, quiet, cool, still, dead) |
| stable(adjective, quiet, sound, smooth, reasonable) |
| stoical(adjective, quiet, cool, gentle, cold) |
| stolid(adjective, quiet, cool, tough, rational) |
| temper(noun, verb, control, order, dull) |
| tranquillise |
| unexcitable(adjective, quiet, cool, smooth, easy) |
| comfort(noun, verb, stop, break, order) |
| conciliate(verb, quiet, ease, moderate, lessen) |
| hushed(adjective, quiet, cool, smooth, moderate) |
| inert(adjective, quiet, smooth, gentle, indifferent) |
| insouciant(adjective, feature, state, cool, happy) |
| kind(noun, adjective, quiet, cool, smooth) |
| level(verb, adjective, quiet, smooth, friendly) |
| mellow(verb, adjective, quiet, reduce, cool) |
| passive(adjective, quiet, gentle, still, detached) |
| pastoral(adjective, quiet, cool, easy, relaxed) |
| peace of mind(noun, expression, idiom, characteristic, quiet) |
| propitiate(verb, quiet, ease, moderate, lessen) |
| quiescence(noun, stop, break, quiet, speech) |