| dilute(verb, decline, reduce, ruin) |
| weaken(verb, dull, decline, hurt) |
| adulterate(verb, decline, hurt, reduce) |
| doctor(verb, hurt, reduce, ruin) |
| attenuate(verb, dull, reduce, ruin) |
| dissolve(thin, spoil, corrupt, degrade) |
| reduce(verb, decline, fail, halt) |
| thin(verb, decline, reduce, ruin) |
| spike(verb, hurt, reduce, ruin) |
| contaminate(hurt, thin, spoil, corrupt) |
| corrupt(hurt, thin, spoil, dirty) |
| debase(verb, decline, hurt, reduce) |
| degrade(thin, spoil, corrupt, taint) |
| denature(thin, spoil, corrupt, degrade) |
| irrigate(reduce, diminish, decrease, thin) |
| lace(reduce, diminish, decrease, thin) |
| pollute(hurt, thin, spoil, dirty) |
| alloy(thin, spoil, corrupt, degrade) |
| amalgamate(thin, spoil, corrupt, degrade) |
| blend(thin, spoil, corrupt, degrade) |