Webster's Revised Unabridged Dictionary · 1913

Unclean

Unclean (un*klēn") , adjective

[Anglo-Saxon unclane. See Unnot, and Clean.]

1.
Not clean; foul; dirty; filthy.
2.
Ceremonially impure; needing ritual cleansing.
He that toucheth the dead body of any man shall be unclean seven days. — Num. xix. 11
3.
Morally impure.
Adultery of the heart, consisting of inordinate and unclean affections. — Perkins
Collocations (2)
Unclean animals (Scripture) , those which the Israelites were forbidden to use for food.
Unclean spirit (Scripture) , a wicked spirit; a demon. — Mark i. 27