| run low |
| sap(verb, decline, weaken, lessen, degenerate) |
| sear(contract, shrink, wither) |
| sicken(verb, break, decline, fail, weaken) |
| slump(verb, decline, weaken, lessen, degenerate) |
| spoil(verb, decline, weaken, lessen, degenerate) |
| squander(verb, exhaust, drain, lavish, dissipate) |
| suppurate(verb, decline, weaken, lessen, degenerate) |
| tail off(verb, expression, decline, fail, diminish) |
| taper off(verb, expression, phrasal verb, end, decline) |
| thin(verb, decline, fall, fail, diminish) |
| turn(verb, decline, weaken, lessen, stain) |
| vanish(verb, decline, separate, fall, fail) |
| wither away |
| wizen(verb, decline, fail, dry, contract) |
| wrinkle(verb, reduce, diminish, contract, narrow) |
| ablate |
| absorb |
| assimilate |
| atomise |