| mildew(verb, decline, weaken, lessen, degenerate) |
| mold(verb, decline, weaken, lessen, degenerate) |
| pound(verb, break, beat, reduce, hit) |
| pull to pieces(verb, expression, idiom, separate, crush) |
| putresce(verb, decline, weaken, lessen, degenerate) |
| raze(verb, break, destroy, crash, demolish) |
| split up(verb, expression, phrasal verb, break, part) |
| suppurate(verb, decline, weaken, lessen, degenerate) |
| triturate(verb, beat, reduce, crush, smash) |
| wane(verb, drop, decline, fall, fail) |
| wilt(verb, break, drop, give, decline) |
| atrophy(verb, decline, weaken, lessen, degenerate) |
| attenuate |
| be impaired(verb, decline, weaken, lessen, degenerate) |
| become contaminated(expression, decline, weaken, lessen, degenerate) |
| bite the dust(expression, idiom, decline, cease, decay) |
| blight(verb, break, decline, hurt, ruin) |
| blow up(expression, rupture, fracture) |
| break open(expression, rupture, fracture) |
| canker |