Word Summary
akathartos: unclean, impure
Original Word: ἀκάθαρτος
Transliteration: akathartos
Phonetic Spelling: (ak-ath'-ar-tos)
Part of Speech: Adjective
Short Definition: unclean, impure
Meaning: unclean, impure
Strong's Concordance
foul, unclean.

From a (as a negative particle) and a presumed derivative of kathairo (meaning cleansed); impure (ceremonially, morally (lewd) or specially, (demonic)) -- foul, unclean.

see GREEK a

see GREEK kathairo

Thayer's Greek Lexicon
STRONGS NT 169: ἀκάθαρτος

ἀκάθαρτος, (καθαίρω) (from Sophocles down), in the Sept. equivalent to טָמֶא, not cleansed, unclean;

a. in a ceremonial sense, that which must be abstained from according to the levitical law, lest impurity be contracted: Acts 10:14; Acts 11:8 (of food); Acts 10:28; 1 Corinthians 7:14 (of men); 2 Corinthians 6:17 (from Isaiah 52:11, of things pertaining to idolatry); Revelation 18:2 (of birds),

b. in a moral sense, unclean in thought and life (frequent in Plato): Ephesians 5:5; τά ἀκάθαρτα τῆς πορνείας, Revelation 17:4 (according to the true reading); πνεύματα, demons, bad angels (in twenty-three passages of the Gospels, Acts, and Revelation): Matthew 10:1; Matthew 12:43; Mark 1:23, 26; Mark 3:11, etc.; Luke 4:33, 36; Luke 6:18, etc.; Acts 5:16; Acts 8:7; Revelation 16:13; Revelation 18:2 (πνεύματα πονηρά in Matthew 12:45; Luke 7:21; Luke 8:2; Luke 11:26; Acts 19:12f, 15f).