Fornication
WordNet
noun
(1) Extramarital sex that willfully and maliciously interferes with marriage relations
"Adultery is often cited as grounds for divorce"
(2) Voluntary sexual intercourse between persons not married to each other
WiktionaryText
Etymology
Coined between 1300 and 1350 Middle English fornicacioun from Late Latin fornicātiōn- (s. of fornicātiō).
Noun
- sexual intercourse, especially on the part of an unmarried person.
- The act of such illicit sexual intercourse between a man and a woman which does not by law amount to adultery.
- 1604 I am the sister of one Claudio, Condemn'd upon the act of fornication To lose his head; condemn'd by Angelo — Shakespeare, Measure for Measure, Act 5, Scene 1
- 1611 Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness, Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God. — Galatians 5:19-21 KJV