Fornication--voluntary sexual intercourse between two unmarried persons or two persons not married to each other.
Also, you should really know that the Greek word por·nei′a, translated “fornication,” has a fairly broad meaning. It relates to sexual relations involving persons not married to each other and focuses on the misuse of the sexual organs. Por·nei′a includes such acts as oral sex, anal sex, and masturbating another person—conduct commonly associated with houses of prostitution (in Bible times). People who think that such acts are not “fornication” are fooling themselves. The word "whoremongers" comes from the Greek word "pornos," which can also be translated "fornicators." So a fornicator and a whoremonger is the same.Fornication was first recorded in Middle English about the 1303. It comes from the Latin word "fornix," which literally means "a vault" or "an arch." So what does a vault or an arch have to do with committing fornication? At that particular time in Rome, prostitutes solicited their customers in archways.