According to a seventh-century English monk and historian, St. Bede (The Venerable), the word Easter derives from the Anglo-Saxon goddess of new life and fertility called Eostre. Often associated with Spring, pagans honored the goddess around the vernal equinox – a special time in Spring when day and night are about equal length all over the world.
It’s worth noting, in Greek (as well as French, Italian, Spanish and other European languages) the official word for Easter is some form of Pascha. One reason may be that while Jesus Christ was alive neither he, nor any of his followers, spoke English, let alone visited what was to become England. He spoke Aramaic and his sayings were later recorded by disciples in both Aramaic and Greek.
Because all early followers of Jesus were Jews, it makes perfect sense that the words they used to describe Jesus’ crucifixion and later Resurrection was directly related to the Passover Feast that he and his disciples were celebrating in Jerusalem. At the time, and to this day, Passover remains one of the most important Jewish festivals commemorating the exodus of ancient Israelite from slavery in Egypt.