impure
adjective
°Not pure; not clean; dirty; foul; filthy; containing something which is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc.
"The impure gemstone was not good enough to be made into a necklace, so it was thrown out."
°Defiled by sin or guilt; unholy; unhallowed; -- said of persons or things.
verb
°(obsolete) To defile; to pollute.
synonyms: imperfect, tainted