11 letters · 22 points in Scrabble
adjective severely destructive
originEtymology tree English cataclysm Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English cataclysmic From cataclysm + -ic.
Etymology from Wiktionary, CC BY-SA 3.0