Pronunciation: (im-pyoor'),[key] —adj. 1. not pure; mixed with extraneous matter, esp. of an inferior or contaminating nature: impure water and air. 2. modified by admixture, as color.
3. mixed or combined with something else: an impure style of architecture. 4. regarded by a religion as unclean, as animals or things.
5. not morally pure or proper; unchaste or obscene: impure thoughts. 6. marked by foreign and unsuitable or objectionable elements or characteristics, as a style of art or of literary expression.