1. Irish: The word "Sceilig" in Irish refers to a rocky island or a sharp, steep cliff. This is likely the root of the name, as the Skellig islands off the coast of Ireland are known for their dramatic, rocky cliffs.
2. Norse: There's also a connection to the Old Norse word "skel," which means "rock" or "cliff." This suggests a possible influence from the Vikings who were active in Ireland during the Viking Age.
3. English: The word "Skellig" was likely adopted into the English language through the Irish word. However, it's possible that the English word "shell" or "skull" may have also contributed to its meaning and sound.
Therefore, the word "Skellig" is a combination of Irish, Norse, and possibly English influences, reflecting the complex history of the islands and their connection to various cultures.