| abate(verb, drop, fall, fail, diminish) |
| backslide(verb, drop, fall, fail, diminish) |
| cheapen(verb, drop, fall, fail, diminish) |
| decay(verb, drop, fall, fail, diminish) |
| decrease(verb, drop, fall, fail, diminish) |
| diminish(verb, drop, fall, fail, return) |
| disimprove(verb, drop, fall, fail, diminish) |
| droop(verb, drop, fall, fail, diminish) |
| drop(verb, fall, fail, return, lower) |
| dwindle(verb, drop, fall, fail, diminish) |
| ebb(verb, drop, fall, fail, diminish) |
| fade(verb, drop, fall, fail, diminish) |
| fall off(verb, expression, drop, fall, fail) |
| flag(verb, drop, fall, fail, diminish) |
| go downhill(verb, expression, drop, fall, fail) |
| go to pot(verb, expression, idiom, drop, fall) |
| go to the dogs(verb, expression, idiom, drop, fall) |
| hit the skids(verb, expression, idiom, drop, fall) |
| languish(verb, drop, fall, fail, diminish) |
| lapse(verb, drop, fall, fail, diminish) |