/ Thesaurus / T Synonyms of triumphal arch Find synonyms for: Noun1. triumphal arch, arch, memorial, monumentusage: a monumental archway; usually they are built to commemorate some notable victoryWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language