| dwindle(verb, decline, weaken, lessen, degenerate) |
| envenom(verb, turn, spoil, alienate) |
| fade(verb, decline, weaken, lessen, degenerate) |
| fail(verb, decline, weaken, lessen, degenerate) |
| gelatinate(set, thicken, coagulate, clot) |
| get worse(expression, decline, weaken, lessen, degenerate) |
| go to seed(expression, idiom, decline, weaken, lessen) |
| go to the dogs(expression, idiom, decline, weaken, lessen) |
| hit rock bottom(expression, idiom, decline, weaken, lessen) |
| hit the skids(expression, idiom, decline, weaken, lessen) |
| hound(verb, harass, pursue, chase, persecute) |
| jellify(set, dry, thicken, coagulate, coalesce) |
| knot |
| lessen(verb, decline, weaken, degenerate, deteriorate) |
| lump(thicken, coalesce, congeal) |
| mildew(verb, decline, weaken, lessen, degenerate) |
| mold(verb, decline, weaken, lessen, degenerate) |
| molder(verb, dull, decline, spoil, weaken) |
| mortify(verb, decline, weaken, lessen, degenerate) |
| ossify(verb, close, set, fix, settle) |