What is another word for "base"?

Roget's Thesaurus (1911) lists these synonyms for "base": baseboard, based, basement, basis, bilge, bottom, built, burst, caeca, centerboard, covet, covetous, dado, deck, earth, envious, envy, est, flag, floor, foot, footing, foundation, fundamental, ground, hardpan, hold, hoof, invidious, jalousie, joy, keel, livor, mopboard, nadir, nethermost, pavement, paving, petit, plinth.