Definitions
1.AdjectiveNot pure"The impure gemstone was not good enough to be made into a necklace, so it was thrown out.; He was thinking impure thoughts involving a girl from school.; an impure method"
2.AdjectiveContaining undesired intermixtures"The impure gemstone was not good enough to be made into a necklace, so it was thrown out."
3.AdjectiveUnhallowed; defiled by something unholy, either physically by an objectionable substance, or morally by guilt or sin
4.AdjectiveUnchaste; obscene (not according to or not abiding by some system of sexual morality)"He was thinking impure thoughts involving a girl from school."
5.AdjectiveHaving side effects."an impure method"
6.Verbto defile; to pollute