Definitions
1.verbTo make something dangerous or toxic by introducing impurities or foreign matter."This water is contaminated. It isn't safe to drink."
2.verbTo soil, stain, corrupt, or infect by contact or association.
3.verbTo make unfit for use by the introduction of unwholesome or undesirable elements."Do not contaminate the peanut butter with the jelly."
4.verbTo infect, often with bad objects
5.adjectiveAdulterated; impure