im ‧ pure /ɪmˈpjʊə $ -ˈpjʊr/ BrE AmE adjective
[ Word Family: noun : ↑ purification , ↑ purist , ↑ purity ≠ ↑ impurity , ↑ purifier ; verb : ↑ purify ; adverb : ↑ purely ; adjective : ↑ pure ≠ ↑ impure ]
1 . not pure or clean, and often consisting of a mixture of things instead of just one OPP pure :
drug dealers selling impure heroin
2 . old-fashioned impure thoughts, feelings etc are morally bad because they are about sex – sometimes used humorously:
He tried, without success, to rid his mind of any impure thoughts about Julia.