| be rotten(verb, spoil, down, smell badly) |
| become foul(noun, food, bad, spoiled) |
| biodegrade(verb, spoil, regress, break down) |
| breakdown(verb, bad, down, spoiled) |
| canker(verb, spoil, regress, break down) |
| damage(verb, break, bad, spoil, disimprove) |
| decompound(verb, spoil, regress, break down) |
| degenerate(verb, bad, down, spoiled) |
| deprave(verb, bad, down, spoiled) |
| disimprove(verb, break, bad, spoil) |
| disintegrate(verb, spoil, regress, break down) |
| dissipate(verb, spoil, regress, break down) |
| dissociate(verb, spoil, regress, break down) |
| dwindle(verb, bad, down, spoiled) |
| expand(verb, spoil, regress, break down) |
| fester(verb, spoil, regress, break down) |
| foul up(verb, break, bad, spoil, disimprove) |
| funk(verb, spoil, down, smell badly) |
| get rotten(verb, spoil, regress, break down) |
| give out(verb, break, bad, spoil, disimprove) |