See pollute in Webster's New World Roget's A-Z Thesaurus II
verb
To make physically impure:
contaminate, defile, foul, poison. See cleanTo make morally impure:
contaminate, corrupt, defile, infect, soil, taint. See cleanTo spoil or mar the sanctity of:
defile, desecrate, profane, violate. See clean, religion, sacred
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