im·pu·ri·ty

/ımˈpjurəti/ noun, pl -ties

1 [noncount] : the quality or state of being impure

the impurity of the water

moral impurity

2 [count] : an unwanted substance that is found in something else and that prevents it from being pure

The syrup is strained to remove impurities.

The water is free of impurities.