Cataclysmic(adjective)
Causing sudden and violent change.
Hindi meaning:प्रलयकारी
Synonyms: Disastrous, Calamitous, Catastrophic, Ruinous
Antonyms: Constructive, Arsey, Auspicious, Beneficial
Example: At some point, it all crashed in a cataclysmic disaster.
Trick to remember: Cat ki death cataclysmic hai. 
