| decrease(noun, drop, decline, fall, deterioration) |
| decrepitude(noun, drop, decline, fall, deterioration) |
| deflation(recession, overproduction) |
| degeneracy(noun, drop, decline, fall, deterioration) |
| devolution(noun, drop, fall, deterioration, falloff) |
| dilapidation(decline, deterioration, degeneration) |
| disintegration(decline, deterioration, degeneration) |
| disrepair(decline, deterioration, degeneration) |
| dissolution(noun, drop, decline, fall, deterioration) |
| dive(noun, drop, fall, deterioration, falloff) |
| downfall(noun, drop, decline, fall, deterioration) |
| drop-off(noun, drop, fall, deterioration, falloff) |
| dwindling(noun, drop, decline, fall, deterioration) |
| ebbing(noun, drop, fall, deterioration, falloff) |
| enfeeblement(noun, drop, fall, deterioration, falloff) |
| extinction(decline, deterioration, degeneration) |
| falling off(noun, expression, drop, fall, deterioration) |
| falloff(noun, drop, decline, fall, deterioration) |
| flop(noun, drop, fall, deterioration, falloff) |
| gangrene(decline, deterioration, degeneration) |