/ Thesaurus / R Synonyms of royal fern Find synonyms for: Noun1. royal fern, royal osmund, king fern, ditch fern, French bracken, Osmunda regalis, flowering fern, osmundusage: large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted frondsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language