Neasa is of Irish origin and means 'radiance' or 'brightness'. It is derived from the Old Irish word 'Nessa', which also denotes radiance or brightness. In ancient Irish literature, Neasa was a legendary queen who was known for her beauty and intelligence. The name has been used in Ireland for centuries but it remains relatively rare today. It is often Anglicized to Nancy or Nessa but retains its unique charm and meaning when kept as Neasa.
"Neasa saw five babies named after it during 2008."