| Upstairs 1. (adv.) Up the stairs; in or toward an upper story. 2. (a.) Being above stairs; as, an upstairs room. Thesaurus Entries above, abovestairs, airward, aloft, aloof, heavenward, high, high up, in the air, in the clouds, on high, on stilts, on the peak, on tiptoe, over, overhead, skyward, straight up, tiptoe, to the zenith, up, up attic, up north, up steps, upalong, uphill, uphillward, uplong, upstream, upstreamward, uptown, upward, upwards, upwith |