Antonyms for purify

free; make clean:

condemn, corrupt, blame, hold, sentence, incriminate, keep, dirty, adulterate, pollute, encourage, soil, charge.

noun:

foul, taint, injure, demean, corrupt, depress, profane, spoil, muddy, cloud, impair, pervert, soil, stain, dirty, mar, aggravate, poison, deteriorate, dull, warp, blemish, harm.