Added 10 October 2026
cataclysmic
/ˌkætəˈklɪzmɪk/ adjective
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about cataclysmic at Wordnik → Where our words come from →
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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.