| cool(verb, calm, control, quiet, restrain) |
| cool off(verb, expression, phrasal verb, calm, quiet) |
| cool out(verb, expression, phrasal verb, control, restrain) |
| croak |
| crop(verb, decline, reduce, ease, diminish) |
| cut(verb, decline, reduce, ease, diminish) |
| cut back(verb, expression, phrasal verb, decline, reduce) |
| de-escalate(verb, decline, reduce, ease, diminish) |
| decease |
| degrade(verb, decline, reduce, ease, diminish) |
| dilute(verb, decline, reduce, ease, diminish) |
| dim(verb, decline, reduce, diminish, decrease) |
| downsize(verb, decline, reduce, ease, diminish) |
| drain(verb, drop, close, decline, reduce) |
| draw to a close(verb, expression, idiom, decline, reduce) |
| drop dead |
| dwindling |
| dying down(verb, expression, end, pass, soothe) |
| erode(verb, decline, reduce, ease, diminish) |
| exit |