un ‧ clean /ˌʌnˈkliːn◂/ BrE AmE adjective
[ Word Family: noun : ↑ cleaner , ↑ cleaning , ↑ cleanliness , ↑ clean , ↑ cleanser ; verb : ↑ clean , ↑ cleanse ; adverb : ↑ clean , ↑ cleanly ; adjective : ↑ clean ≠ ↑ unclean ]
1 . biblical morally or ↑ spiritually bad:
an unclean spirit
2 . unclean food, animals etc are those that a particular religion says must not be eaten, touched etc
3 . dirty:
unclean drinking water
—uncleanness noun [uncountable]