/ Thesaurus / I Synonyms of icing sugar Find synonyms for: Noun1. icing sugar, powdered sugarusage: finely powdered sugar used to make icingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language