| decay(noun, drop, fall, failure, deterioration) |
| declension |
| decrement(decrease, nonincrease) |
| degeneracy(noun, drop, fall, failure, deterioration) |
| degenerating(verb, deteriorating) |
| degeneration(noun, drop, fall, failure, deterioration) |
| descending |
| deteriorating(verb, adjective, deteriorating) |
| drooping(weakening, fading, wearying, flagging) |
| easing(verb, pacifying) |
| failing(noun, adjective, drop, fall, last) |
| failure(noun, drop, fall, deterioration, falloff) |
| falling(adjective, weakening, lessening, declining, decreasing) |
| flight(going, loss, passing, disappearance, fading) |
| flow |
| languishing(weakening, fading, wearying, flagging) |
| loss(noun, drop, fall, escape, going) |
| lowering(noun, adjective, drop, fall, deterioration) |
| plunging(adjective, declining, shrinking, lowering, falling) |
| quieting(verb, adjective, declining, shrinking, lowering) |