Not pure or clean; contaminated.
Not purified by religious rite; unclean.
Immoral or sinful: impure thoughts.
Mixed with another, usually inferior substance; adulterated.
Being a composite of more than one color or mixed with black or white.
Deriving from more than one source, style, or convention; eclectic: an impure art form.
(ĭm-pyŏŏr') 