1. Corrupted by contact or association
   "contaminated evidence"
    
2. Rendered unwholesome by contaminants and pollution
   "had to boil the contaminated water";
   - polluted

1. Make impure in a bad way; make something harmful, especially by the addition of some unwanted substance
   "Don't drink the water — it's contaminated";
   - pollute, foul
    
2. Degrade through harmful influence
   "Social media disinformation can contaminate public discourse";
   - corrupt

See also: impure, mercury-contaminated

Type of: alter, begrime, bemire [archaic], change, colly [archaic], dirty, grime, modify, soil

Antonym: decontaminate, uncontaminated

Encyclopedia: Contaminated