UNCLEAN Meaning of UNCLEAN in English a. 1.Foul, dirty, filthy, nasty, ~ly.2.( Jewish Law .) Ceremonially impure, needing ritual cleansing, impure.3.Sinful, morally impure, foul with sin, unholy, polluted. Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012