Downstairs rhymes with:
stairs, stares, upstairs, stairs, stares, tears, upstairs, affair's, affairs, air's, airs, ayer's, ayres, bancshares', bares, bear's, bears, bears', berres, billionaires, blair's, blares, bures, care's, cares, chaires, chairs, claire's, compares, d'affaires, dares, declares, despairs, ensnares, errs, euromobiliare's, fair's, faires, fairs, fares, flares, freres, frontieres, gehres, glares, hair's, hairs, hare's, hares, heirs, impairs, jares, kehres, maerz, mairs, mare's, mares, millionaire's, millionaires, moliere's, multimillionaires, pairs, pares, pears, phares, pierre's, prayers, prepares, questionnaires, repairs, sayres, scares, share's, shares, shares', sherr's, snares, spares, squares, stairs, stares, swears, tears, theirs, there's, unawares, upstairs, usair's, wares, wears, where's