| decrease(noun, drop, fall, deterioration, ebb) |
| decrescence(decrease, ebb, senescent, deflation, devolution) |
| deflation(decrease, ebb) |
| dematerialization(ebb, disappearance, windup, devolution) |
| depression(noun, drop, fall, deterioration, falloff) |
| descent(noun, drop, fall, failure, deterioration) |
| desistance(ebb, disappearance, windup) |
| difficulty(hardship, misfortune) |
| dip(noun, drop, fall, decrease, deterioration) |
| disappearance(ebb, windup, devolution) |
| disappearing act(expression, ebb, disappearance, windup, devolution) |
| dive(noun, drop, fall, failure, deterioration) |
| down and out |
| downfall(noun, drop, fall, failure, deterioration) |
| downslide(noun, drop, fall, deterioration, falloff) |
| downswing(noun, drop, fall, deterioration, falloff) |
| downtrend(noun, drop, fall, decrease, deterioration) |
| downward slope(expression, decrease, ebb, deflation, devolution) |
| drawing together(expression, decrease, ebb, deflation) |
| drop-off(noun, drop, fall, decrease, deterioration) |