/ Thesaurus / M Synonyms of michaelmas day Find synonyms for: Noun1. Michaelmas, Michaelmas Day, September 29, quarter dayusage: honoring the archangel Michael; a quarter day in England, Wales, and IrelandWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language