| atrophy(noun, verb, decline, collapse, degenerate) |
| attrition |
| erosion |
| frail |
| wasting(noun, decline, ruin, collapse, deterioration) |
| ablation |
| absorption |
| adulteration(noun, decline, collapse, deterioration, impairment) |
| assimilation |
| blight(noun, verb, decline, collapse, degenerate) |
| break down(verb, expression, phrasal verb, decline, separate) |
| breaking down(noun, verb, expression, adjective, decline) |
| caries(noun, decline, collapse, deterioration, decay) |
| collapse(noun, verb, decline, degenerate, deteriorate) |
| consumption(noun, decline, ruin, collapse, deterioration) |
| corrosion(noun, decline, ruin, collapse, failing) |
| crumbling(noun, adjective, decline, collapse, deterioration) |
| decadence(noun, decline, ruin, collapse, failing) |
| decay(noun, verb, decline, ruin, collapse) |
| decline(noun, verb, collapse, degenerate, deteriorate) |