/ Thesaurus / V Synonyms of vertical union Find synonyms for: Noun1. industrial union, vertical union, union, labor union, trade union, trades union, brotherhoodusage: a labor union that admits all workers in a given industry irrespective of their craftWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language