/ Thesaurus / R Synonyms of royal agaric Find synonyms for: Noun1. royal agaric, Caesar's agaric, Amanita caesarea, agaricusage: widely distributed edible mushroom resembling the fly agaricWordNet 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