| reach depths(verb, expression, decline, weaken, lessen) |
| sap(verb, decline, weaken, lessen, degenerate) |
| shrivel(verb, decline, weaken, lessen, degenerate) |
| sicken(verb, decline, weaken, lessen, degenerate) |
| sink(verb, decline, fail, weaken, lessen) |
| slump(verb, decline, weaken, lessen, degenerate) |
| spoil(verb, decline, weaken, lessen, degenerate) |
| suppurate(verb, decline, weaken, lessen, degenerate) |
| turn(verb, decline, weaken, lessen, degenerate) |
| wane(verb, decline, fail, weaken, lessen) |
| waste away(verb, expression, phrasal verb, decline, weaken) |
| weaken(verb, decline, fail, lessen, degenerate) |
| wear away(verb, expression, phrasal verb, decline, weaken) |
| abrade(verb, decline, diminish, decrease, use) |
| atrophy(verb, decline, degenerate, deteriorate, better) |
| be worthless(verb, decline, diminish, decrease, use) |
| become threadbare(verb, expression, decline, diminish, decrease) |
| become worn(verb, expression, decline, diminish, decrease) |
| blighted |
| break down(verb, expression, phrasal verb, better, thrive) |