adulteration atrophy blight breakdown caries consumption corrosion decadence decline decomposition decrease decrepitude degeneracy degeneration depreciation deterioration dilapidation disintegration disrepair dissolution downfall dying extinction fading failing gangrene impairment mortification putrescence putridity putridness rot rottenness rotting ruin ruination rust senescence spoilage spoilation wasting withering crumbling perishing wasting away