| go to the dogs(expression, idiom, decline, weaken, lessen) |
| grime(verb, dull, hurt, spoil, dirty) |
| harass(adjective, pack, overrun, flood) |
| hit rock bottom(expression, idiom, decline, weaken, lessen) |
| hit the skids(expression, idiom, decline, weaken, lessen) |
| impure |
| lace(cut, thin, spoil, corrupt, degrade) |
| leaven(deterioration, uncleanness) |
| lessen(verb, decline, weaken, degenerate, deteriorate) |
| malign(verb, slander, defame) |
| maltreat(verb, break, hurt, ruin, harm) |
| mess(dirty, foul, debase, taint, muddy) |
| mildew(verb, decline, weaken, lessen, degenerate) |
| mingle(verb, cut, thin, spoil, corrupt) |
| mishandle(verb, harm, corrupt, impair, persecute) |
| mistreat(verb, harm, corrupt, impair, persecute) |
| misuse(harm, corrupt, impair, debase, defile) |
| mix(noun, cut, thin, spoil, corrupt) |
| mold(verb, decline, weaken, lessen, foul) |
| molder(verb, decline, weaken, lessen, degenerate) |