| dump(noun, stain, decay, affliction, scar) |
| dwindle(verb, stop, break, drop, end) |
| ebb(verb, stop, break, drop, end) |
| emaciate |
| erode(verb, hurt, reduce, destroy, smart) |
| fade away(expression, stop, break, end, decline) |
| fail(verb, stop, break, drop, end) |
| fall(verb, stop, drop, end, decline) |
| fall apart(verb, expression, phrasal verb, decline, weaken) |
| fall into decay(expression, idiom, deterioration) |
| fall to pieces(verb, expression, idiom, break, collapse) |
| ferment(verb, dull, spoil, decay, sour) |
| fizzle out(expression, stop, break, end, decline) |
| flag(verb, break, drop, decline, fall) |
| foulness(immorality, pollution, decay, corruption, depravity) |
| get worse(expression, decline, weaken, lessen, degenerate) |
| gnaw(verb, break, hurt, ruin, destroy) |
| go downhill(verb, expression, stop, drop, end) |
| go to pot(verb, expression, idiom, drop, decline) |
| go to the dogs(verb, expression, idiom, drop, decline) |