Breadcrumb Home > Thesaurus > C Synonyms of celtic Find synonyms for: Noun 1. Celtic, Celtic language, Indo-European, Indo-European language, Indo-Hittite usage: a branch of the Indo-European languages that (judging from inscriptions and place names) was spread widely over Europe in the pre-Christian era Adjective 1. Celtic, Gaelic usage: relating to or characteristic of the Celts WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of celtic (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: soign Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language