St. Cyril was a scholar, a theologian, and a missionary. As one of the founders of Slavic literature, he was instrumental in developing the Cyrillic alphabet, which is still used today in countries such as Russia, Bulgaria, and Serbia. Some synonyms for St. Cyril include St. Constantine, St. Methodius, and the Apostle to the Slavs. He is also known as the patron saint of educators and pupils, reflecting his dedication to teaching and spreading knowledge. St. Cyril is remembered for his significant contributions to religious history and linguistic culture, and his name remains an important figure in Eastern Orthodox Christianity.