/ Thesaurus / F Synonyms of fomor Find synonyms for: Noun1. Fomor, Fomorian, Celtic deityusage: one of a group of Celtic sea demons sometimes associated with the hostile power of natureWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language