| ebb(noun, drop, fall, decrease, failure) |
| fading(verb, loss, failing, declining, deteriorating) |
| decaying(verb, adjective, declining, deteriorating) |
| declining(verb, adjective, last, failing, final) |
| wane(noun, drop, fall, decrease, loss) |
| waning(noun, verb, adjective, drop, fall) |
| dying(verb, declining) |
| decline(noun, drop, fall, decrease, deterioration) |
| descent(noun, drop, fall, decrease, failure) |
| deterioration(noun, drop, fall, decrease, failure) |
| diminishing(adjective, declining, shrinking, fading, lowering) |
| disintegrating |
| dwindling(noun, adjective, drop, fall, deterioration) |
| receding(verb, adjective, escape, going, loss) |
| reflux(noun, decrease, nonincrease) |
| sinking(verb, adjective, last, failing, final) |
| withering(verb, adjective, deteriorating) |
| worsening(noun, verb, drop, fall, failure) |
| flagging(adjective, weakening, lessening, fading, wearying) |
| regression(noun, drop, fall, deterioration, falloff) |