Mamzer

A mamzer (Hebrew:ממזר‎) is a person born from certain forbidden relationships, or the descendant of such a person, in the Hebrew Bible and Jewish religious law. A mamzer in modern Jewish culture is someone who is either born of adultery by a married Jewish woman and a Jewish man who is not her husband, or born of incest (as defined by the Bible), or someone who has a mamzer as a parent. Mamzer status is not synonymous with illegitimacy, since it does not include children whose mothers were unmarried.