| abate(verb, decline, fail, weaken, fade) |
| adulterate(verb, decline, fail, fade, deteriorate) |
| break up(verb, expression, decline, fail, fade) |
| cripple(verb, decline, fail, fade, deteriorate) |
| crumble(verb, decline, fail, fade, deteriorate) |
| cut(verb, decline, fail, fade, deteriorate) |
| debase(verb, decline, fail, fade, deteriorate) |
| debilitate(verb, decline, fail, fade, deteriorate) |
| decline(verb, fail, weaken, fade, deteriorate) |
| decrease(verb, decline, fail, fade, deteriorate) |
| depress(verb, decline, fail, fade, deteriorate) |
| deteriorate(verb, decline, fail, weaken, fade) |
| devitalize(verb, decline, fail, fade, deteriorate) |
| dilute(verb, decline, fail, fade, deteriorate) |
| diminish(verb, decline, fail, weaken, fade) |
| droop(verb, decline, fail, fade, deteriorate) |
| dwindle(verb, decline, fail, weaken, fade) |
| ease up(verb, expression, decline, fail, fade) |
| enervate(verb, decline, fail, fade, deteriorate) |
| exhaust(verb, decline, fail, fade, deteriorate) |