/ Thesaurus / L Synonyms of labor day Find synonyms for: Noun1. Labor Day, legal holiday, national holiday, public holidayusage: first Monday in September in the United States and CanadaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language