The term "Celtic Deity" refers to a god or goddess worshiped by the ancient Celtic people. Some common synonyms for this phrase may include "Celtic divinity," "Celtic god," or "Celtic goddess." Other related terms might include "Celtic spiritual being," "Celtic mythological figure," or simply "Celtic character." Some specific examples of Celtic deities may include Brigid, the goddess of poetry, healing, and smithcraft, or Lugh, the god of light, skill, and mastery. Whether referencing a specific deity or the broader concept of Celtic spirituality, there are many ways to describe these fascinating and important figures from ancient mythology.