up-and-down
Moby betekeniswoordenboek: 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.
Vind elders meer over up-and-down: etymologie - rijmwoorden - Wikipedia.
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