1. pollute, foul, contaminate, dirty, soil, begrime, grime, colly, bemire

usage: make impure; "The industrial wastes polluted the lake"

2. contaminate, change, alter, modify

usage: make radioactive by adding radioactive material; "Don't drink the water--it's contaminated"


1. dirty (vs. clean), contaminating

usage: spreading pollution or contamination; especially radioactive contamination; "the air near the foundry was always dirty"; "a dirty bomb releases enormous amounts of long-lived radioactive fallout"

2. corrupting, contaminating, infectious (vs. noninfectious)

usage: that infects or taints

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