cataclysmic

/ˌkætəˈklɪzmɪk/
adjective
  1. Causing or involving a sudden, violent event that brings great destruction or change.
    • A cataclysmic storm hit the coast, causing widespread damage.
    • The company faced cataclysmic losses after the market crashed.
    • The cataclysmic earthquake left thousands of people homeless.
  2. Extremely bad or severe in a way that causes major problems or suffering.
    • The drought had a cataclysmic effect on the region's food supply.
    • The team's cataclysmic defeat ended their chances of winning the championship.
    • Her cataclysmic mistake cost the project millions of dollars.
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