| curtail(verb, decline, reduce, ease, diminish) |
| cut(verb, decline, reduce, ease, diminish) |
| cut back(verb, expression, decline, reduce, ease) |
| cut off(verb, expression, calm, dull, quiet) |
| de-escalate(verb, decline, reduce, ease, diminish) |
| deafen |
| decline(verb, control, reduce, restrain, ease) |
| decrease(verb, calm, control, quiet, decline) |
| decrease the volume(verb, expression, idiom, calm, dull) |
| degrade(verb, decline, reduce, ease, diminish) |
| die down(verb, expression, calm, control, quiet) |
| dilute(verb, calm, decline, reduce, cool) |
| downsize(verb, decline, reduce, ease, diminish) |
| drain(verb, decline, reduce, ease, diminish) |
| drown(verb, suppress, subdue, silence, soften) |
| dry up(verb, expression, calm, dull, quiet) |
| dulcify(verb, calm, soothe, repress, appease) |
| dumb(verb, calm, dull, quiet, suppress) |
| dumbfound |
| dwindle(verb, calm, quiet, decline, reduce) |