| mortify(verb, decline, crush, confuse, shame) |
| mummy(contract, dwindle, shrink) |
| narrow down(expression, drop, cut, decline, reduce) |
| pass(verb, stop, end, decline, fall) |
| quell(verb, drop, quiet, cut, decline) |
| quiet(verb, drop, cut, decline, reduce) |
| rankle(verb, stop, end, pass, fall) |
| relapse(verb, deteriorate) |
| retrogress(verb, deteriorate) |
| revert(verb, deteriorate) |
| run down(verb, expression, stop, end, pass) |
| run low(verb, expression, stop, drop, end) |
| rust(verb, deterioration, corrode) |
| sap(verb, decline, blow, weaken, lessen) |
| settle(verb, drop, quiet, cut, decline) |
| shake |
| sicken(verb, break, decline, fail, weaken) |
| slack off(verb, expression, drop, cut, decline) |
| slacken(verb, stop, drop, cut, decline) |
| slash(verb, drop, quiet, cut, decline) |