/ Thesaurus / R Synonyms of royal mast Find synonyms for: Noun1. royal mast, topmastusage: topmast immediately above the topgallant mastWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language