/ Thesaurus / C Synonyms of constitutional union party Find synonyms for: Noun1. Constitutional Union Party, party, political partyusage: a former political party in the United States; formed in 1859 by former Whigs who hoped to preserve the UnionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language