impure has definitions from the field of religion
1
[ adjective ] used of persons or behaviors; not morally pure

Examples

"impure thoughts"

Related terms

pure defiled unchaste morality

2
[ adjective ] combined with extraneous elements
3
[ adjective ] (religion) ritually unclean or impure

Synonyms

unclean

Examples

"and the swine...is unclean to you"-Leviticus 11:3

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