/ Thesaurus / S Synonyms of spackling compound Find synonyms for: Noun1. spackle, spackling compound, plasterusage: powder (containing gypsum plaster and glue) that when mixed with water forms a plastic paste used to fill cracks and holes in plasterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language