| decline(verb, fail, blow, weaken, lessen) |
| decompose(verb, decline, weaken, lessen, degenerate) |
| decrease(verb, decline, reduce, fail, halt) |
| defile(verb, decline, weaken, lessen, degenerate) |
| degenerate(verb, decline, weaken, lessen, deteriorate) |
| deject(verb, upset, dull, reduce, disturb) |
| demoralize(verb, upset, shame, challenge, weaken) |
| depreciate(decline, weaken, lessen, degenerate, deteriorate) |
| desolate(verb, upset, trouble, dull, reduce) |
| deteriorate(verb, decline, fail, weaken, lessen) |
| devastate(verb, destruction) |
| dig out(verb, expression, hurt, ruin, destroy) |
| dint |
| discolor(verb, decline, weaken, lessen, degenerate) |
| discourage(verb, upset, dull, reduce, disturb) |
| disgust(verb, worry, fail, strain, annoy) |
| dishearten(verb, upset, trouble, dull, reduce) |
| disintegrate(verb, decline, weaken, lessen, degenerate) |
| dismantle(destruction, deterioration) |
| dispirit(verb, upset, dull, reduce, disturb) |