impurity

ot noun

1. The condition of being impure; because of contamination, pollution, adulteration or insufficient purification. Even animals in the Jewish system cause impurity only when they are dead.
2. A component or additive that renders something else impure. The impurities in the iron ore made extraction of the iron very difficult.
3. A state of immorality or sin; especially the weakness of the flesh: inchastity. With his cheating, lying and stealing, he epitomised the impurity of humanity.