/ Thesaurus / R Synonyms of root cellar Find synonyms for: Noun1. root cellar, cellar, excavation, storage spaceusage: an excavation where root vegetables are storedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language