See cataclysm in Webster's New World Roget's A-Z Thesaurus II
noun
An occurrence inflicting widespread destruction and distress:
calamity, catastrophe, disaster, tragedy. See helpA momentous or sweeping change:
convulsion, revolution, upheaval. See changeAn abundant, usually overwhelming flow or fall, as of a river or rain:
alluvion, cataract, deluge, downpour, flood, freshet, inundation, Niagara, overflow, torrent. (Chiefly British) spate. See big
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