Any of several forms of sexual intercourse held to be unnatural, particularly bestiality or historically homosexuality, but also (sometimes) anal or oral sex.

Sodomy is anal or oral sex. The word sodomy is derived from Sodom and Gomorrah in the Book of Genesis. Some countries have passed laws making sodomy a crime. Some of these sodomy laws have been overturned in the western world. In some places, they are not routinely enforced.

François Elluin, Sodomites provoking the wrath of God, from Le pot pourri de Loth, 1781