The term 'Forum Tongue' is a reference to LATIN, which was the language of the Roman Forum. It was the official language of the Roman Empire and was used in many areas of public life, including law, politics, literature, and religion. LATIN was also the language of the Catholic Church until the Second Vatican Council in 1965. Today, LATIN is still used in some academic and legal contexts, as well as in the liturgy of the Catholic Church.