20 Moby Thesaurus words for "up-and-down": alternate, back-and-forth, orthodiagonal, orthogonal, perpendicular, plumb, plunging, precipitous, reciprocal, reciprocative, right-angle, right-angled, right-angular, seesaw, sheer, sine wave, steep, straight-up, straight-up-and-down, to-and-fro