| dry-rot(verb, decline, weaken, lessen, degenerate) |
| end(decline, divide, cease, decay, fragment) |
| eradicate(verb, separate, destroy, crush, crack) |
| evanesce(verb, separate, heat, disappear, fade) |
| fade away(verb, expression, phrasal verb, break, reduce) |
| faint(verb, break, drop, give, fail) |
| fall off(verb, expression, drop, reduce, fall) |
| fizzle out |
| flatten(verb, destroy) |
| foul(hurt, dirty, corrupt, stain, muddy) |
| fuse(verb, heat, fade, soften, dissolve) |
| get worse(expression, decline, weaken, lessen, degenerate) |
| give out(verb, expression, break, drop, give) |
| go off(verb, expression, spoil, decay, taint) |
| go to seed(verb, expression, idiom, decline, fail) |
| go to the dogs(verb, expression, idiom, drop, decline) |
| grind to powder(expression, idiom, pulverulence) |
| halve(verb, separate) |
| hit rock bottom(expression, idiom, decline, weaken, lessen) |
| impair(verb, break, decline, hurt, ruin) |