| fall(verb, drop, reduce, fail, return) |
| fall apart(verb, expression, decline, weaken, degenerate) |
| fall back |
| fall off(verb, expression, phrasal verb, drop, reduce) |
| fall to pieces(verb, expression, idiom, break, collapse) |
| flag(verb, drop, decline, fall, fail) |
| foul |
| go to pieces(verb, expression, idiom, decline, degenerate) |
| go to the dogs(verb, expression, idiom, drop, decline) |
| hit the skids(verb, expression, idiom, drop, decline) |
| impair(verb, decline, weaken, degenerate, deteriorate) |
| injure(verb, decline, weaken, degenerate, deteriorate) |
| languish(verb, drop, decline, fall, fail) |
| lessen(verb, drop, decline, reduce, fall) |
| let down |
| lose it(verb, expression, phrasal verb, decline, fail) |
| lose quality(verb, expression, decline, fail, lower) |
| lose value(verb, expression, drop, decline, fall) |
| lower(verb, drop, decline, fall, fail) |
| mar(verb, decline, weaken, degenerate, deteriorate) |