/ Thesaurus / A Synonyms of archaicism Find synonyms for: Noun1. archaism, archaicism, formulation, expressionusage: the use of an archaic expressionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language