| blight(noun, decline, disease, weaken, lessen) |
| mold(noun, decline, weaken, lessen, degenerate) |
| decay(noun, verb, disease, stain, deteriorate) |
| must(noun, verb, uncleanness, fungus) |
| mould(noun, fungus) |
| fungus(noun, stain, decay, mold, affliction) |
| spoil(verb, decline, weaken, lessen, degenerate) |
| rot(verb, decline, weaken, lessen, stain) |
| rust(noun, mold, bane) |
| canker(stain, decay, affliction, bane, scar) |
| corruption(stain, decay, uncleanness, affliction, scar) |
| decompose(verb, decline, weaken, lessen, degenerate) |
| dry rot(expression, idiom, uncleanness, bane) |
| go bad(expression, decline, weaken, lessen, degenerate) |
| putrefy(verb, decline, weaken, lessen, degenerate) |
| worm(noun, bane) |
| break up(expression, decline, weaken, lessen, degenerate) |
| cancer |
| crumble(verb, decline, weaken, lessen, degenerate) |
| disintegrate(verb, decline, weaken, lessen, degenerate) |