/ Thesaurus / T Synonyms of trade union Find synonyms for: Noun1. union, labor union, trade union, trades union, brotherhood, organization, organisationusage: an organization of employees formed to bargain with the employer; "you have to join the union in order to get a job"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language