Definition of "cataclysmal" [cat•a•clys•mal]

• As destructive as a cataclysm. (adjective)

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• "The belief belongs to what may be called the cataclysmal theory of progress, which improves the world by sudden starts, and clings so fondly to liquor-laws, and has profound faith in specific remedies for moral and political diseases."
• "Holy crap, tonight was almost cataclysmal for the party."
• "As I was playing my dad yesterday, I thought back upon those days of constantly inclement tempers, and was astonished at my cataclysmal past."