| evanish(verb, decline, fall, fail, diminish) |
| evaporate(verb, decline, fall, fail, diminish) |
| fag out(verb, expression, quiet, decline, fall) |
| fail(verb, decline, fall, diminish, weaken) |
| fall(verb, decline, fail, diminish, weaken) |
| flag(verb, quiet, decline, fall, fail) |
| fold(verb, quiet, decline, fall, fail) |
| hush(verb, quiet, decline, fall, fail) |
| languish(verb, quiet, decline, fall, fail) |
| lessen(verb, quiet, decline, reduce, fall) |
| melt(verb, decline, fall, fail, diminish) |
| melt away(verb, expression, quiet, decline, fall) |
| moderate(verb, decline, fall, fail, diminish) |
| perish(verb, decline, fall, fail, diminish) |
| peter out(verb, expression, decline, fall, fail) |
| poop out(verb, expression, quiet, decline, fall) |
| quiet(verb, decline, fall, fail, diminish) |
| shrivel(verb, quiet, decline, fall, fail) |
| sink(verb, decline, fall, fail, diminish) |
| slack off(verb, expression, quiet, decline, fall) |