The English term "buggered" originated with the Bogomils, who were an ancient Bulgarian tribe of people. The now defunct social-religious movement originated in the time of Peter I of Bulgaria (927 – 969) as a reaction against state and clerical oppression. In spite of all measures of repression (including killing them), the sect remained strong until the fall of Bulgaria in the end of the 14th century. Their views of human sexuality and rejection of the traditional (even back then) view of marriage was not taken nicely by their neighbors. For the Bogomils, sex played a part in many social roles in their society, and male/male or male/female sex was normal (depending on the social activity: friendship, love, making babies, spiritual, sport). Despite some rather advanced spiritual and intellectual beliefs, the Bogomills were negatively labeled for butt fucking, and since the English (profane) translation at the time for "Bogomills" was "Buggery" that's what the act was eventually known as. Long before then, Alexis of Byzantium tried to get rid of the sect and many saved their lives by moving to France and Italy. An easy target to use as the enemy for political and cultural purposes, they were said to worship the devil and Innocent II launched a crusade against them in 1209.
Legal use of the word: "Buggery" is historically referred to as a "crime against nature." It is an offense under both Common Law and statutes. Although prosecution for buggery is rare, the punishment upon conviction can be a fine, imprisonment, or both.
Synonyms: intercourse via the anus, committed by a man with a man or woman. anal intercourse; anal sex; buggery; sodomy.