| come to nothing(expression, idiom, decline, fall, fail) |
| curdle(verb, decline, weaken, lessen, degenerate) |
| curtail(verb, drop, quiet, cut, decline) |
| dangle |
| deepen |
| denature(cut, thin, spoil, corrupt, deterioration) |
| destroy(verb, reduce, damage, lower, harm) |
| deteriorated |
| devaluate(verb, drop, cut, decline, reduce) |
| deviate(verb, change, twist, alter, deceive) |
| die away(verb, expression, decline, fall, fail) |
| die down(expression, drop, cut, decline, reduce) |
| die out(verb, expression, decline, fall, fail) |
| disappear(verb, stop, end, decline, pass) |
| dissolve(verb, cut, beat, decline, hurt) |
| drop off(expression, drop, cut, decline, reduce) |
| dry-rot(verb, decline, weaken, lessen, degenerate) |
| dry up(expression, drop, cut, decline, reduce) |
| endure(verb, get, hurt, smart, agonize) |
| enervate(verb, decline, reduce, fail, damage) |