| make sick(verb, expression, idiom, shock, dislike) |
| mildew(decline, weaken, lessen, degenerate, deteriorate) |
| mold(decline, weaken, lessen, degenerate, deteriorate) |
| molder(decline, weaken, lessen, degenerate, deteriorate) |
| mortify(decline, weaken, lessen, degenerate, deteriorate) |
| overwork(verb, worry, fail, strain, annoy) |
| pain(verb, upset, trouble, hurt, disturb) |
| pejorate(decline, weaken, lessen, degenerate, deteriorate) |
| perish(decline, weaken, lessen, degenerate, deteriorate) |
| pine(verb, break, fail, disease, weaken) |
| poison |
| pollute(verb, decline, weaken, lessen, degenerate) |
| precipitate |
| put out |
| putrefy(decline, weaken, lessen, degenerate, deteriorate) |
| putresce(decline, weaken, lessen, degenerate, deteriorate) |
| reach depths(expression, decline, weaken, lessen, degenerate) |
| regress(fall, fail, weaken, degenerate, deteriorate) |
| retrogress(fall, fail, degenerate, deteriorate, revert) |
| rot(verb, break, decline, fail, weaken) |