impure

adj. contaminated; unclean, soiled, dirty; unrefined; not morally pure, corrupt

Impurities are substances inside a confined amount of liquid, gas, or solid, which differ from the chemical composition of the material or compound.Impurities are either naturally occurring or added during synthesis of a chemical or commercial product. During production, impurities may be purposely, accidentally, inevitably, or incidentally added into the substance.The level of impurities in a material are generally defined in relative terms.  Standards have been established by various organizations that attempt to define the permitted levels of various impurities in a manufactured product. Strictly speaking, then, a material's level of purity can only be stated as being more or less pure than some other material.
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Adjective
1. combined with extraneous elements
(antonym) pure
(similar) adulterate, adulterated, debased
(see-also) unclean
(attribute) purity, pureness
2. used of persons or behaviors; not morally pure; "impure thoughts"
(antonym) pure
(similar) defiled, maculate
(see-also) unchaste
(attribute) morality
3. ritually unclean or impure; "and the swine...is unclean to you"-Leviticus 11:3
(synonym) unclean
(similar) defiled
(see-also) dirty, soiled, unclean
(classification) religion, faith, religious belief

adj. impure, unclean, tainted

adj. impure, unclean, contaminated, soiled