calamity

noun

1. an event resulting in great loss and misfortune

   noun.event

   Examples

   The whole city was affected by the irremediable calamity.

   Synonyms cataclysm catastrophe disaster tragedy

   Source: WordNet 3.0

2. Any great misfortune or cause of misery; -- generally applied to events or disasters which produce extensive evil, either to communities or individuals.

   noun

   Source: webster1913