Celticism may refer to: A word or linguistic property adapted from a Celtic language List of English words of Celtic origin List of English words of Scottish Gaelic origin Irish words used in the English language List of English words of Irish origin List of English words of Welsh origin Hiberno-English Kiltartanese Political pan-Celticism The ideology of Lega Nord which culturally identifies with the Celtic people The romanticist Celtic Revival Celts (modern), a modern Celtic identity that has emerged in Western Europe since the 18th century Celtism also known as Celtic neopaganism Celticisation, the historic process of conquering and assimilating by the ancient Celts