26 synonyms for downfall such as collapse, waterloo, and annihilation. Downfall is a noun, and its antonyms are rise, salvation, and survival.
Waterloo, annihilation, collapse, conquest, crash, debasement, defeat, degradation, deposition, destruction, disgrace, elimination, end, failure, fall, labefaction, nemesis, ousting, overthrow, ruin, ruination, toppling, undoing, unseating, and vanquishing.