The term Celtic Deity refers to a variety of gods and goddesses worshipped by the ancient Celts. The four crossword solutions for this term are DRUID (5 letters), ERSE (4 letters), Esus (4 letters), and Lleu (4 letters). DRUID is a term used to refer to the priestly class in ancient Celtic societies, while ERSE is an alternative spelling of the term Irish, which is the language of the ancient Celts. Esus and Lleu are two of the most important gods in the Celtic pantheon, with Esus being associated with healing and fertility and Lleu being associated with the sun and sky.