abyss, brink, cliff, verge, cusp, teeter, oblivion, quicksand, tightrope, ledge, crossroads, quagmire, razor edge, primrose path, totters, headlong, mire, irrelevance, morass, peril, perdition, banana peel, rightwards, pinnacle, irrelevancy, throes, tar pit, rockface, despond, chasm, imploding, ruination, glide path, petrified, edge, twilight zone, cataclysm, backwards, despair, anarchy, ravine, gorge, doom, disintegration, lurch, extinction, horizon, depths, reckoning, mountainside, pendulum, earthwards, railing, apocalypse, destitution, ruin, dire straits, tailspin, downslope, stasis, shoals, rollercoaster, danger, hillside, netherworld, seracs, heights, nirvana, rabbit hole, nadirs, calamity, abysses, signpost, serac, purgatory, boulder, terra incognita, footing, mediocrity, knoll, collapse, mountain, acrophobic, pedestal, limbo, slope, armageddon, sundering, impends, hill, trapdoor, bandwagon, desuetude, nose dive, obscurity, finiteness, minefield, hairpin bend, disunion, rearview mirror, horseshoe falls, turpitude, precipices, steeps, crags, cliffs, crag, bluff, bluffs, chasms, declivities, steep, headland, headlands, defile, escarpment, acclivities, calloused, dizzy, inboard, reddened, scarped, turned, upturned, abraded, absorption, angled, anvil, apposed, beveled, bevelled, bifacial, blistered, blurred, blurry, bottom, carmine

cataract

cliff, drop-off