Goidelic

Goidelic, Goidhelic, Gadhelic, Gaedhelic. Name for the group of Q-Celtic languages comprising Irish, Scottish Gaelic, and Manx. Distinguish from Brythonic or Brittonic, denoting the P-Celtic languages of Britain. The Goidelic invaders of Ireland are often referred to as the Féni in Irish texts.

A Dictionary of Celtic Mythology. James McKillop. Oxford University Press, 1998.