| spoil(noun, verb, dull, change, decline) |
| turn(noun, verb, change, decline, spoil) |
| decay(verb, dull, spoil, deteriorate, taint) |
| go off(noun, verb, expression, phrasal verb, change) |
| go bad(verb, expression, dull, decline, turn) |
| putrefy(verb, dull, decline, spoil, weaken) |
| break up(verb, expression, phrasal verb, decline, weaken) |
| decompose(verb, dull, decline, spoil, weaken) |
| be impaired(verb, decline, weaken, lessen, degenerate) |
| become contaminated(expression, decline, weaken, lessen, degenerate) |
| blight(verb, decline, weaken, lessen, degenerate) |
| collapse(verb, decline, weaken, lessen, degenerate) |
| corrode(verb, decline, pain, weaken, lessen) |
| crumble(verb, dull, decline, spoil, weaken) |
| decline(verb, weaken, lessen, degenerate, deteriorate) |
| defile(verb, decline, weaken, lessen, degenerate) |
| degenerate(verb, decline, weaken, lessen, deteriorate) |
| depreciate(verb, decline, weaken, lessen, degenerate) |
| deteriorate(verb, decline, weaken, lessen, degenerate) |
| discolor(verb, decline, weaken, lessen, degenerate) |