not pure; mixed with extraneous matter, especially of an inferior or contaminating nature
: impure water and air.
modified by admixture, as color.
mixed or combined with something else: an impure style of architecture.
regarded by a religion
as unclean, as animals or things.
not morally pure or proper; unchaste or obscene: impure thoughts.
marked by foreign and unsuitable or objectionable elements or characteristics, as a style of art
or of literary expression
Origin: 1530–40; Related forms
< Latin impūrus.
5. coarse, vulgar, improper, licentious.