/ Thesaurus / R Synonyms of roger de mortimer Find synonyms for: Noun1. Mortimer, Roger de Mortimerusage: English nobleman who deposed Edward II and was executed by Edward III (1287-1330)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language