| falsify(thin, spoil, corrupt, degrade) |
| impair(thin, spoil, corrupt, degrade) |
| infiltrate(thin, spoil, corrupt, degrade) |
| intermix(thin, spoil, corrupt, degrade) |
| lace(reduce, diminish, decrease, thin) |
| make impure(expression, thin, spoil, corrupt) |
| mingle(thin, spoil, corrupt, degrade) |
| mix(reduce, thin, spoil, alter) |
| phony up(expression, thin, alter, interfere) |
| plant(thin, alter, corrupt, interfere) |
| pollute(thin, spoil, corrupt, degrade) |
| shave(reduce, diminish, decrease, thin) |
| spike(diminish, thin, alter, interfere) |
| taint(thin, spoil, corrupt, degrade) |
| transfuse(thin, spoil, corrupt, degrade) |
| vitiate(thin, spoil, corrupt, degrade) |
| weaken(reduce, decrease, thin, corrupt) |
| contaminate(thin, spoil, corrupt, degrade) |