cataclysmic

From cataclysm +‎ -ic.

• IPA^(key): /ˌkætəˈklɪzmɪk/

• Audio (Southern England):

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cataclysmic (comparative more cataclysmic, superlative most cataclysmic)

1. Of or pertaining to a cataclysm; causing great destruction or upheaval; catastrophic.

   It is believed that a cataclysmic impact caused the extinction of the dinosaurs.

   • 2005, Edmund White, My Women‎^[1], archived from the original on 4 December 2012:

     That’s why to be rejected in love was so cataclysmic: one had been judged and found wanting.

• cataclysm