avalanche, cadence, catabasis, catenary, cessation, coast, collapse, crash, dead set, dead stand, dead stop, deadlock, deceleration, declension, decline, decline and fall, decrescendo, decurrence, diminuendo, dive, downtrend, downturn, droop, drop, dwindling, dying down, ebb, ebbing, fall, full stop, glide, glissade, glissando, halt, landslide, landslip, lapse, lock, lowering, plunge, remission, retreat, sag, sideslip, sinkage, skid, slide, slip, slippage, slither, slowdown, slump, snowslide, snowslip, stand, standstill, stillstand, stop, submergence, swag, wane, waning