basement Synonyms

cellar underground room lower floor lower level subbasement undercroft bedrock grounder lumberyard understructure ft ground level ground floor first floor powder room undercarriage glory hole wall vault substratum substruction substructure subterrane subterranean subterraneous underbuilding winery underground underpart underpinning underside burial chamber recreation room nether portion lower ground floor basement level sub-basement subterranean room underground chamber HQ crawl space crawlspace subsurface playroom root cellar strong room subfloor sublevel wine cellar Cellars