unscalable adjective2 •Not scalable, that cannot be climbed.The other end of their promenade was closed by a lofty and almost unscaleable precipice,the abode of hundreds of sea-fowl of different kinds […] — 1822 •Not scalable, that cannot be changed in scale.The idea has its detractors. Skeptics argue the whole idea is unscalable, and that large vertical farms would be insatiable consumers of energy to keep the plants lit, healthy, and harvested […] — 2013
