9 letters · 18 points in Scrabble
noun a sudden violent change in the earth's surface
noun an event resulting in great loss and misfortune
originFrom French cataclysme, from Latin cataclysmus, from Ancient Greek κατακλυσμός (kataklusmós, “deluge, flood”), from κατακλύζω (kataklúzō, “to dash over, flood, deluge, inundate”), from κατά (katá, “downwards, towards”) + κλύζω (klúzō, “to wash off, to wash away, to dash over”).
Etymology from Wiktionary, CC BY-SA 3.0