| immoral(adjective, spoil, regress, disimprove) |
| mercenary(adjective, spoil, regress, disimprove) |
| mouldering(adjective, spoil, regress, disimprove) |
| mouldy(adjective, spoil, regress, disimprove) |
| perfidious(adjective, spoil, regress, disimprove) |
| perished(adjective, spoil, regress, disimprove) |
| putrescent(adjective, spoil, regress, disimprove) |
| putrid(adjective, spoil, regress, disimprove) |
| rank(adjective, spoil, regress, disimprove) |
| sink(adjective, spoil, regress, disimprove) |
| sour(adjective, spoil, regress, disimprove) |
| stinking(adjective, spoil, regress, disimprove) |
| tainted(adjective, spoil, regress, disimprove) |
| treacherous(adjective, spoil, regress, disimprove) |
| unsound(adjective, spoil, regress, disimprove) |
| untrustworthy(adjective, spoil, regress, disimprove) |
| venal(adjective, spoil, regress, disimprove) |
| vicious(adjective, spoil, regress, disimprove) |