ἀκάθαρτον [3 verses](adj sg neut nom) "Unclean" is akathartos, which means "foul," "uncleansed," "ceremonially unclean" (of food}, "not sifted," "containing impurities," "not fit for cleansing," and "morally unclean." It was the term used to refer to a woman's menses.  - "Unclean" is an adjective that means "foul," "uncleansed," and "morally unclean." It was the term used to refer to a woman's menses.