/ Thesaurus / H Synonyms of hallowmass Find synonyms for: Noun1. All Saints' Day, Allhallows, November 1, Hallowmas, Hallowmass, holy day of obligationusage: a Christian feast day honoring all the saints; first observed in 835WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language