contaminating

(verb) make impure. Synonyms: pollute, foul, contaminate. Example: "The industrial wastes polluted the lake."

(verb) make radioactive by adding radioactive material. Synonyms: contaminate. Example: "Don't drink the water--it's contaminated."

(adj) spreading pollution or contamination; especially radioactive contamination. Synonyms: dirty (vs. clean). Examples: "The air near the foundry was always dirty." "A dirty bomb releases enormous amounts of long-lived radioactive fallout."

(adj) that infects or taints. Synonyms: corrupting.