| decline(verb, weaken, lessen, degenerate, deteriorate) |
| defile(verb, decline, weaken, lessen, degenerate) |
| degenerate(verb, decline, weaken, lessen, deteriorate) |
| depreciate(verb, decline, weaken, lessen, degenerate) |
| deteriorate(verb, decline, weaken, lessen, degenerate) |
| discolor(verb, decline, weaken, lessen, degenerate) |
| dissolve(verb, decline, weaken, lessen, degenerate) |
| dry-rot(verb, decline, weaken, lessen, degenerate) |
| dwindle(verb, decline, weaken, lessen, degenerate) |
| fade(verb, decline, weaken, lessen, degenerate) |
| fail(verb, decline, weaken, lessen, degenerate) |
| gangrene |
| get worse(verb, expression, decline, weaken, lessen) |
| go bad(verb, expression, decline, weaken, lessen) |
| go to seed(verb, expression, idiom, decline, weaken) |
| go to the dogs(verb, expression, idiom, decline, weaken) |
| hit rock bottom(verb, expression, idiom, decline, weaken) |
| hit the skids(verb, expression, idiom, decline, weaken) |
| lessen(verb, decline, weaken, degenerate, deteriorate) |
| pejorate(verb, decline, weaken, lessen, degenerate) |