1. (n.) A sudden fall; a body of things falling.

2. (n.) A sudden descent from rank or state, reputation or happiness; destruction; ruin.

Waterloo atrophy bane beating bouleversement brash breakdown burst of rain cascade cataract chute cloudburst collapse comedown conquering conquest convulsion crash cropper deathblow debacle decadence declension declination decline defeat deflation defluxion degeneracy degeneration degradation deluge descending descension descent destroyer destruction devolution discomfiture down downbend downcome downcurve downflow downgrade downpour downrush downtrend downturn downward trend drencher drop dropping drubbing failure fall falling flood gravitation gushing rain headache heavy rain hiding inclination lambasting lathering licking mastery nose dive overcoming overthrow overturn plash plummeting pounce pour pratfall problem prostration quietus rainburst rainspout rainstorm rapids ruin ruination sabotage scud smash soaker soaking rain spate spout stoop stumble subdual subduing subjugation subversion swoop tailspin thrashing torrent of rain trimming trouble trouncing tumble undoing upheaval upset vanquishment waterfall waterspout whipping