fornication

noun | \ ˌfȯr-nə-ˈkā-shən \ | for·ni·ca·tion

1. : consensual sexual intercourse between a man and especially single woman who are not married to each other; also : the crime of engaging in fornication — compare adultery : the crime of engaging in fornication — compare adultery

   Note: Where still considered a crime, fornication is classified as a misdemeanor.