| shrink(verb, drop, cut, decline, reduce) |
| taper off(verb, expression, reduce, weaken, fast) |
| bate(verb, drop, check, decline, increase) |
| degenerate(verb, drop, cut, decline, reduce) |
| flag(verb, drop, get, decline, hurt) |
| go down(verb, expression, drop, bend, degenerate) |
| sag(noun, verb, drop, decline, increase) |
| slack off(verb, expression, phrasal verb, drop, cut) |
| deteriorate(verb, drop, cut, decline, hurt) |
| die(verb, increase, weaken, deteriorate, wane) |
| fail(verb, drop, decline, fall, diminish) |
| fall(noun, verb, drop, cut, decline) |
| go to pieces(expression, idiom, reduce, deteriorate, worsen) |
| hit the skids(verb, expression, idiom, drop, fall) |
| lapse(noun, verb, drop, check, increase) |
| peter out(expression, drop, cut, decline, reduce) |
| remit(verb, increase, become) |
| run low(expression, drop, cut, decline, reduce) |
| slip(noun, verb, move, drop, decline) |
| suffer(verb, hurt, smart, agonize, ache) |