What is the meaning of Impure?

Not pure

1. Containing undesired intermixtures

   Containing undesired intermixtures

   Unhallowed; defiled by something unholy, either physically by an objectionable substance, or morally by guilt or sin

   Unchaste; obscene (not according to or not abiding by some system of sexual morality)

   to defile; to pollute

   feminine singular of impur

   feminine plural of impuro

   basely, shamefully, infamously

   impurely

   vocative masculine singular of impūrus

   Source: wiktionary.org