denotes "unclean, impure" (a, negative, and kathairo, "to purify"), (a) ceremonially, e.g., Acts 10:14,28; (b) morally, always, in the Gospels, of unclean spirits; it is translated "foul" in the AV of Mark 9:25; Revelation 18:2 , but always "unclean" in the RV. Since the word primarily had a ceremonial significance, the moral significance is less prominent as applied to a spirit, than when poneros, "wicked," is so applied. Cp. akatharsia, "uncleanness." See UNCLEAN.
Revelation 17:4
With over 3,400 entries, this timeless classic is THE reference guide to New Testament Greek words for English readers. It explains the meaning of the original Greek with the added dimension of the context of the Greek word.Wikipedia
Read More