| tamper with(verb, expression, phrasal verb, disregard, oppose) |
| weaken(verb, cut, hurt, harm, thin) |
| bemire |
| blight(verb, hurt, harm, spoil, corrupt) |
| blotch(noun, verb, dirty, foul, stain) |
| blur(verb, spoil, foul, stain, smear) |
| cheapen(verb, cut, thin, spoil, corrupt) |
| congest |
| daub(noun, blemish, soil, tarnish, uncleanness) |
| decay(verb, ruin, harm, spoil, corrupt) |
| denaturalize |
| despoil(verb, ruin, abuse, harm, scorn) |
| deteriorate(cut, hurt, thin, spoil, corrupt) |
| devalue(cut, hurt, thin, spoil, corrupt) |
| disease |
| distort(degrade, debase, taint) |
| doctor up(expression, cut, thin, spoil, corrupt) |
| grime(verb, dull, hurt, spoil, dirty) |
| hurt(verb, dull, harm, spoil, dirty) |
| infest(verb, poison, adulterate) |