| backslide(reduce, lessen, lapse, deteriorate, decay) |
| collapse(reduce, deteriorate, worsen) |
| come apart at seams(expression, idiom, reduce, slip, lessen) |
| corrode(reduce, lessen, lapse, deteriorate, decay) |
| corrupt(reduce, lessen, lapse, deteriorate, decay) |
| decay(reduce, lessen, lapse, deteriorate, worsen) |
| decrease(reduce, lessen, lapse, deteriorate, decay) |
| deprave(reduce, lessen, lapse, deteriorate, decay) |
| descend(reduce, lessen, lapse, deteriorate, decay) |
| disimprove(reduce, lessen, lapse, deteriorate, decay) |
| disintegrate(reduce, lessen, lapse, deteriorate, decay) |
| fade away(verb, expression, decline, fail, diminish) |
| fade out(verb, expression, decline, fail, diminish) |
| fagged(fail, fade, faint, listless, fatigue) |
| fagged out(expression, fade, fatigue, fag, tuckering) |
| fall off(expression, reduce, lessen, lapse, deteriorate) |
| go downhill(expression, reduce, lessen, lapse, deteriorate) |
| go to the dogs(expression, idiom, reduce, slip, lessen) |
| hungered(verb, fail, weaken, faint, listless) |
| hungering(fail, faint, listless, fag, tuckering) |