| sliding(verb, adjective, inferior, depressed, declining) |
| tumbling(verb, descending) |
| decline(noun, drop, fall, deterioration, plunge) |
| decreasing(adjective, lessening, declining, deteriorating, reducing) |
| deteriorating(adjective, lessening, declining, worsening, dropping) |
| downgrade(noun, adjective, drop, decline, fall) |
| failing(verb, failing, unsuccessful, lessening, worsening) |
| lowering(verb, adjective, declining, decreasing, deteriorating) |
| toppling(verb, adjective, deteriorating, dropping, descending) |
| waning(adjective, weakening, lessening, declining, worsening) |
| diminishing(adjective, lessening, declining, decreasing, deteriorating) |
| dipping |
| downhill(adjective, inferior, depressed, declining, wornout) |
| droop(drop, decline, fall, plunge, slide) |
| losing(verb, failing, unsuccessful) |
| setting |
| billowy |
| cascade |
| cascading(adjective, inferior, depressed, declining, downward) |
| cataract |