IMPURE

[im.pure] adj [ME, fr. MF & L; MF, fr. L impurus, fr. in- + purus pure] (15c): not pure: as a: lewd, unchaste b: containing something unclean: foul "~ water" c: ritually unclean d: mixed or impregnated with an extraneous and usu. unwanted substance "an ~ chemical" -- im.pure.ly adv -- im.pure.ness n