| retire(verb, drop, close, go, decline) |
| retrogress(verb, drop, close, decline, reduce) |
| taper(verb, stop, drop, dull, close) |
| atrophy(verb, decline, diminish, blow, decrease) |
| blight(verb, decline, weaken, lessen, degenerate) |
| degeneration(noun, drop, fall, decrease, failure) |
| drop off(verb, expression, phrasal verb, drop, cut) |
| fade away(verb, expression, phrasal verb, stop, drop) |
| failure(noun, drop, fall, deterioration, falloff) |
| fall away(verb, expression, phrasal verb, drop, decline) |
| fizzle(verb, phrasal verb, strong, increase, fail) |
| remit(verb, stop, increase, decrease, abate) |
| retreat(noun, drop, close, go, decline) |
| run low(verb, expression, idiom, stop, drop) |
| sag(noun, verb, drop, fall, fail) |
| slip(noun, verb, drop, decline, settle) |
| slow(verb, stop, control, dull, restrain) |
| waning(noun, drop, fall, decrease, retreat) |
| age(noun, verb, age, older) |
| change |