cataclysm
1. [ noun ] (geology) a sudden violent change in the earth's surface
Synonyms: catastrophe
Related terms: geological_phenomenon nuclear_winter
2. [ noun ] an event resulting in great loss and misfortune
Synonyms: tragedy disaster catastrophe calamity
Examples:

"the whole city was affected by the irremediable calamity" "the earthquake was a disaster"

Related terms: misfortune kiss_of_death visitation plague famine meltdown apocalypse act_of_God
Similar spelling:   cataclysmic
  cataclysmal
  cataclinal
  catclaw